0:00:02 > 0:00:04# We've got a television show of our own
0:00:04 > 0:00:07# Making stuff that's been designed by you lot at home
0:00:07 > 0:00:10# Building your inventions the best that we can
0:00:10 > 0:00:13# Mostly out of rubbish from the back of our van
0:00:13 > 0:00:17# We've even got a title that'll grab your attention
0:00:17 > 0:00:19# All together now! #
0:00:22 > 0:00:24BAGPIPES DRONE
0:00:24 > 0:00:25This is dreadful!
0:00:25 > 0:00:28We've got inventions to be choosing, work to do.
0:00:28 > 0:00:30Stop this! Please stop this!
0:00:30 > 0:00:32- PHONE RINGING - Stop it!
0:00:32 > 0:00:34- OUCHO SPEAKS CACTINIAN - What?
0:00:34 > 0:00:35OUCHO SPEAKS CACTINIAN
0:00:35 > 0:00:37The phone, yes, all right!
0:00:39 > 0:00:42Hang on, I'm always answering the phone.
0:00:42 > 0:00:44Why don't you do it for a change?
0:00:44 > 0:00:45OUCHO SPEAKS CACTINIAN
0:00:45 > 0:00:48I don't care if it's bagpipe practice...
0:00:48 > 0:00:52Hark! That sounds like a pigeon princess being held prisoner.
0:00:52 > 0:00:55I am coming, my pretty.
0:00:55 > 0:00:57Nelson, away!
0:00:58 > 0:00:59..that doesn't add up.
0:00:59 > 0:01:01- No, answer the phone! - No.- Answer it!
0:01:01 > 0:01:04- OUCHO SPEAKS CACTINIAN - What do you mean it's gone?
0:01:06 > 0:01:08Right, what have you done with it?
0:01:08 > 0:01:10Have you tried eating it again?
0:01:10 > 0:01:11I've told you before!
0:01:11 > 0:01:14OUCHO SPEAKS CACTINIAN
0:01:17 > 0:01:20- Oh.- Oi! Give me my phone back, you lousy pigeon!
0:01:20 > 0:01:22OUCHO SPEAKS CACTINIAN
0:01:22 > 0:01:24I'm not climbing the tree, it's high.
0:01:24 > 0:01:27Those two down there will never take you away from me.
0:01:27 > 0:01:33What if the Big Big Cheese tries to phone? We'll get in trouble! Oi!
0:01:33 > 0:01:35We need to find an invention that can help get it back,
0:01:35 > 0:01:37something to do with height.
0:01:37 > 0:01:40I think I saw something that might be able to help.
0:01:40 > 0:01:41Oh?
0:01:43 > 0:01:45Yes! Yes, this.
0:01:45 > 0:01:46It's called the Spy Buggy.
0:01:46 > 0:01:49It's from Joshua in Willesden and it throws things
0:01:49 > 0:01:52in the air so maybe we can knock it out of the tree.
0:01:52 > 0:01:54Right, let's go. To Willesden!
0:01:58 > 0:02:01This is it. Great.
0:02:01 > 0:02:04This is going to be brilliant. It's my favourite bit, the surprise.
0:02:04 > 0:02:06Joshua's in his house over there...
0:02:06 > 0:02:08OUCHO SPEAKS CACTINIAN
0:02:08 > 0:02:09Oh, it's this way? Oh, right.
0:02:09 > 0:02:12Oh, it's this way.
0:02:12 > 0:02:16Oh, it IS this way. So, it's definitely THAT house?
0:02:16 > 0:02:17It's left.
0:02:17 > 0:02:19It's definitely left?
0:02:20 > 0:02:24Right. So, it's that way, then?
0:02:24 > 0:02:28This way. Let me just have a look at that.
0:02:28 > 0:02:30Oh! Oh, no. No, no.
0:02:30 > 0:02:34I see what's wrong here. Yeah. Yeah. This is a map of Paris! Not London!
0:02:34 > 0:02:36Let's just ask directions.
0:02:36 > 0:02:39Oh. Excuse me, mate. We're trying to find the house
0:02:39 > 0:02:41- of someone called Joshua.- I am Josh.
0:02:41 > 0:02:43- Surprise!- Oh, dear.
0:02:43 > 0:02:45It's not a surprise, is it?
0:02:45 > 0:02:48- He knows now.- Come this way,- Right.
0:02:48 > 0:02:50Let's follow him, then.
0:02:50 > 0:02:52OUCHO SPEAKS CACTINIAN
0:02:53 > 0:02:56No, it's not nice here in Paris, because we're not in Paris.
0:02:56 > 0:02:58I thought we'd established that.
0:02:58 > 0:03:01Excuse me, we're supposed to be talking about the Spy Buggy here!
0:03:01 > 0:03:03Oh! Oh, yeah. Yeah, yeah.
0:03:03 > 0:03:05- You've seen the show before?- Yeah.
0:03:05 > 0:03:06Well, you know what to do.
0:03:14 > 0:03:17I would like to invent the Spy Buggy -
0:03:17 > 0:03:22a car which sends secret messages and has a water gun on it,
0:03:22 > 0:03:27so I can organise a secret spy party after school.
0:03:27 > 0:03:32I want to send messages to friends to tell them where the party is.
0:03:32 > 0:03:37And I want to drive my Spy Buggy to the party and then spray at anybody
0:03:37 > 0:03:40that gets too close.
0:03:40 > 0:03:43A Spy Buggy. Right. Now, what's all this about messages?
0:03:43 > 0:03:46I'd like to send messages to my friends
0:03:46 > 0:03:49in the library and the computer room.
0:03:49 > 0:03:52- And you want to launch those through the window?- Yes.
0:03:52 > 0:03:54OK, right. And could it launch other things,
0:03:54 > 0:03:58- to knock stuff out of trees, maybe?- Yeah.
0:03:58 > 0:03:59Excellent.
0:03:59 > 0:04:03# Ed And Oucho's Excellent Inventions. #
0:04:03 > 0:04:05We need to start building this Spy Buggy,
0:04:05 > 0:04:06I don't know where to start.
0:04:06 > 0:04:08OUCHO SPEAKS CACTINIAN
0:04:08 > 0:04:09What?
0:04:11 > 0:04:13I am not passing you that banana.
0:04:13 > 0:04:16It's not time to eat, we need inspiration.
0:04:16 > 0:04:19How are we going to build this so it can fire messages
0:04:19 > 0:04:22into Joshua's school window...Oucho?
0:04:22 > 0:04:25Oucho!
0:04:25 > 0:04:27Hey, man. I DO declare
0:04:27 > 0:04:31that is a classic example of gravity in action.
0:04:31 > 0:04:34- No, it's a banana. - No, man, it's gravity.
0:04:34 > 0:04:36Gravity is all around us.
0:04:36 > 0:04:41It's an invisible force which causes objects to pull towards one another.
0:04:41 > 0:04:44Oh. Interesting, but no use to us.
0:04:44 > 0:04:47Hey, calm down, man. Relax.
0:04:47 > 0:04:52It is of help, because you were talking about projectiles.
0:04:52 > 0:04:55Er, no, we were talking about things flying through the air.
0:04:55 > 0:04:58Yes, man. These are called projectiles
0:04:58 > 0:05:01and gravity has a large part to play in that.
0:05:01 > 0:05:04Oh, does it? Boring!
0:05:04 > 0:05:06Listen and learn.
0:05:08 > 0:05:11Say you were to throw something up in the air.
0:05:11 > 0:05:14It would go up, and as long as nothing got in its way,
0:05:14 > 0:05:16it would fall back down to earth.
0:05:16 > 0:05:17Due to gravity?
0:05:17 > 0:05:20Yeah, man. But you have to make sure you throw it
0:05:20 > 0:05:24with the right amount of force. The harder you throw it,
0:05:24 > 0:05:28the longer it takes gravity to pull it back to the ground.
0:05:28 > 0:05:31Right. When we build the Spy Buggy, we have to apply a force
0:05:31 > 0:05:32to our object to get it in the air.
0:05:32 > 0:05:36But we have to remember that gravity will bring it back down to earth.
0:05:36 > 0:05:38What are you talking about, man?
0:05:38 > 0:05:41You were telling me about gravity, Benson. Remember?
0:05:41 > 0:05:44Ha-ha! No, man, I don't remember.
0:05:44 > 0:05:46And by the way, who are you?
0:05:46 > 0:05:48ED SIGHS
0:05:48 > 0:05:51- Maybe we should just have him with chips.- Di.
0:05:52 > 0:05:55- Oh, this is going to be the easiest invention ever, mate.- Di.
0:05:55 > 0:05:57We'll have this done in no time.
0:05:57 > 0:05:58Joshua can have his secret party,
0:05:58 > 0:06:03we'll get our mobile and the Big Big Cheese will be none the wiser.
0:06:03 > 0:06:06We've got to think of something that will give us enough force
0:06:06 > 0:06:08to push something into the sky.
0:06:08 > 0:06:10OUCHO SPEAKS CACTINIAN
0:06:10 > 0:06:13Newspaper?
0:06:13 > 0:06:14A hamster?
0:06:14 > 0:06:17OUCHO SPEAKS CACTINIAN
0:06:17 > 0:06:20Yeah, the Clumsy Twins are trying to cross the Grand Canyon
0:06:20 > 0:06:23in a circus cannon. How is that relevant to us?
0:06:23 > 0:06:27OUCHO SPEAKS CACTINIAN
0:06:27 > 0:06:29Oh, that's a great idea!
0:06:29 > 0:06:31We could ask to borrow their cannon!
0:06:31 > 0:06:33That'll give us enough force for Joshua's messages
0:06:33 > 0:06:37and then we can get our phone back off that pesky pigeon.
0:06:38 > 0:06:41# Ed And Oucho's Excellent Inventions. #
0:06:41 > 0:06:43JOSHUA!
0:06:45 > 0:06:48- Hi, Ed. Hi, Oucho.- Hi, Joshua.
0:06:48 > 0:06:51Have we got a treat for you. We've pushed the boat out here.
0:06:51 > 0:06:53- Do you want to see your Spy Buggy? - Yes.
0:06:53 > 0:06:56Here is your Spy Buggy!
0:06:56 > 0:06:58# Da-da da-da da da-dah! #
0:06:58 > 0:07:01- Spy Buggy!- Is that it?
0:07:01 > 0:07:03- Yeah, that's it. - It's not even red and black.
0:07:03 > 0:07:06What, it's not red and black?
0:07:06 > 0:07:09- What's this? Red. Black. - Why does it say twins on it?
0:07:09 > 0:07:11What? It doesn't say twins on it.
0:07:11 > 0:07:13You need to see it being tested.
0:07:13 > 0:07:17This could be dangerous, stand back. This could be dangerous.
0:07:17 > 0:07:20Oucho was saying he'd like to jump the Grand Canyon
0:07:20 > 0:07:22and he's volunteered to test your Spy Buggy.
0:07:22 > 0:07:24OUCHO SPEAKS CACTINIAN
0:07:24 > 0:07:27(No, you didn't, but I can't find anything else to fit in the hole.)
0:07:27 > 0:07:30(There's cake and bananas in it for you if you do it.)
0:07:30 > 0:07:33- Oh! Losserly.- Yeah, I thought that would persuade you.
0:07:33 > 0:07:37Ladies and gentlemen, I give you the amazing flying Oucho!
0:07:37 > 0:07:38Oucho, are you ready?
0:07:38 > 0:07:40Di!
0:07:40 > 0:07:41Fire!
0:07:41 > 0:07:43Aargh!
0:07:44 > 0:07:45What? Huh?
0:07:48 > 0:07:51Well, that didn't exactly go as planned.
0:07:51 > 0:07:52No, not really.
0:07:52 > 0:07:54It was far too powerful.
0:07:54 > 0:07:56OUCHO SPEAKS CACTINIAN
0:07:56 > 0:08:00Yeah, we'll measure the distance that the Spy Buggy
0:08:00 > 0:08:01is hidden from the window.
0:08:01 > 0:08:03So, if we... Wait a minute.
0:08:03 > 0:08:05- What?- When did you get back?
0:08:06 > 0:08:08Why have you got that tennis stuff?
0:08:08 > 0:08:11OUCHO SPEAKS CACTINIAN
0:08:11 > 0:08:12You've been to Wimbledon?
0:08:12 > 0:08:16OUCHO SPEAKS CACTINIAN
0:08:16 > 0:08:19The cannon did NOT fire you into centre court at Wimbledon.
0:08:19 > 0:08:22This is all sounding a little far-fetched to me.
0:08:22 > 0:08:25'Yes, it's me, Jonny Sinus, reporting to you live...'
0:08:25 > 0:08:28Not him. Who let him back on the telly?
0:08:28 > 0:08:30'..from the Wimbledon championships.
0:08:30 > 0:08:36'Earlier on today, a cactus... Yes, you heard me right, a cactus!
0:08:36 > 0:08:40'made an unusual entry into Wimbledon through the roof...!'
0:08:41 > 0:08:43What?!
0:08:43 > 0:08:44'...Unbelievable!
0:08:44 > 0:08:45Mmm-hmm.
0:08:45 > 0:08:47Sorry I doubted you there, mate.
0:08:47 > 0:08:50- Wimbledon's miles away, isn't it?- Di.
0:08:50 > 0:08:52That circus cannon IS too strong.
0:08:52 > 0:08:54Right, come on. Let's have a think.
0:08:54 > 0:08:57Oh, I know! Jonny Sinus - he knows a lot about hitting things.
0:08:57 > 0:08:59Oh, that's a good idea. Yeah, yeah.
0:08:59 > 0:09:02We should talk to Jonny Sinus. Erm, where's the phone?
0:09:02 > 0:09:05Oh, in the bath.
0:09:05 > 0:09:06Oh, no...
0:09:06 > 0:09:08OUCHO SPEAKS CACTINIAN
0:09:08 > 0:09:10Yes, I know, I know.
0:09:10 > 0:09:12Oh, what's that over there?
0:09:12 > 0:09:13Very convenient.
0:09:13 > 0:09:16ED PANTS
0:09:18 > 0:09:20Oh, what's his number?
0:09:20 > 0:09:23I'll have to use my BBC presenting skills.
0:09:23 > 0:09:25PHONE RINGS
0:09:25 > 0:09:27Hello, BBC switchboard?
0:09:27 > 0:09:30It's Ed Petrie from CBBC -
0:09:30 > 0:09:34the genius, handsome and talented presenter?
0:09:34 > 0:09:36What do you mean, who?
0:09:36 > 0:09:38Just put me through to Jonny Sinus, would you?
0:09:40 > 0:09:42Hello? Jonny Sinus.
0:09:42 > 0:09:45You'll have to be quick, I'm busy at the moment.
0:09:45 > 0:09:48- It's Ed. Ed Petrie.- Oh!
0:09:48 > 0:09:50From the children's department! What is it?
0:09:50 > 0:09:54I need your help. We're trying to fire messages through a window.
0:09:54 > 0:09:58We tried a circus cannon, but it was too powerful. Can you help us?
0:09:58 > 0:10:00Right, Mr Petrie. Right, right.
0:10:00 > 0:10:03I used to be Britain's best tennis player, you know?
0:10:03 > 0:10:06So I know a bit about launching things with force.
0:10:06 > 0:10:09I got every serve into the back of the net.
0:10:09 > 0:10:11- Travelled the world, you know.- Right.
0:10:11 > 0:10:15You need to know about trajectories and speed.
0:10:15 > 0:10:17Trajectories...
0:10:17 > 0:10:20Imagine throwing a tennis ball through the air.
0:10:20 > 0:10:23The path it takes is called the trajectory.
0:10:23 > 0:10:27The trajectory of any object will always be curved,
0:10:27 > 0:10:30as gravity is pulling it down to earth.
0:10:30 > 0:10:31Oh, right.
0:10:31 > 0:10:34But what if something's going too far?
0:10:34 > 0:10:36You need to give it less force.
0:10:36 > 0:10:39The more force you give your projectile,
0:10:39 > 0:10:41the faster it will go.
0:10:41 > 0:10:42The faster something goes,
0:10:42 > 0:10:44the more distance it will travel
0:10:44 > 0:10:46before it falls to the ground.
0:10:46 > 0:10:50- Projectiles, we've heard of them. - If you don't want your projectile
0:10:50 > 0:10:53or message to go very far, give it less force.
0:10:53 > 0:10:59The circus cannon wasn't right. You need something like my MASSIVE arm.
0:10:59 > 0:11:03Nothing beats the precision and grace of my massive arm.
0:11:03 > 0:11:07Right, but you're in Wimbledon and we need to build this Spy Buggy now.
0:11:07 > 0:11:10Oh. Oh, right, Mr Petrie.
0:11:10 > 0:11:13Oh, well, in that case, you need a force-testing machine
0:11:13 > 0:11:17to test how much force you need to send your messages, Mr Petrie.
0:11:17 > 0:11:19Oh, right. Have you got one?
0:11:19 > 0:11:24Eh, no. But I have got my MASSIVE arm, Mr Petrie. It's really big!
0:11:24 > 0:11:27Eh, yeah, right, thanks. Bye.
0:11:29 > 0:11:32Right, guys, Jonny Sinus has offered us the use of
0:11:32 > 0:11:34his massive arm for your Spy Buggy.
0:11:34 > 0:11:36OUCHO SPEAKS CACTINIAN
0:11:36 > 0:11:37No, it's not brilliant,
0:11:37 > 0:11:40because although it is a VERY kind offer,
0:11:40 > 0:11:42it's not exactly practical, is it?
0:11:42 > 0:11:45So, what we need is a force-testing machine
0:11:45 > 0:11:48to measure the force needed to deliver Joshua's messages.
0:11:48 > 0:11:52But first we need to measure the distance to the school window.
0:11:52 > 0:11:55Yes. Joshua'll be able to deliver his messages
0:11:55 > 0:11:58and we'll knock that phone out of that tree and away from that pigeon.
0:11:58 > 0:12:01We need to go to your school and do some measuring.
0:12:01 > 0:12:03OUCHO SPEAKS CACTINIAN
0:12:03 > 0:12:06You're going to sort out the force-testing machine?
0:12:06 > 0:12:07So let me get this straight.
0:12:07 > 0:12:11I'm going to leave ordering important machinery to a pot plant?
0:12:11 > 0:12:12Sounds good to me.
0:12:12 > 0:12:14Yeah, you're right. Let's go!
0:12:23 > 0:12:27OK, Joshua, Oucho's sorted us out with a tennis-ball launcher.
0:12:27 > 0:12:28Where did you get this from?
0:12:28 > 0:12:30OUCHO SPEAKS CACTINIAN
0:12:30 > 0:12:31Oh, from Wimbledon.
0:12:31 > 0:12:34OUCHO SPEAKS CACTINIAN
0:12:34 > 0:12:35Oh, from Sue Barker?
0:12:35 > 0:12:37Oh, she's nice, isn't she?
0:12:37 > 0:12:39Oh, she IS nice.
0:12:39 > 0:12:43She is nice! She's a nice lady. Nice. So.
0:12:43 > 0:12:45We've measured how far you're going to be
0:12:45 > 0:12:47from your friends in the school.
0:12:47 > 0:12:50So, X marks the spots where your friends are
0:12:50 > 0:12:53and we are going to pretend to be the Spy Buggy.
0:12:53 > 0:12:57Now, this force-testing machine will apply force to a projectile
0:12:57 > 0:12:59in there, so we can work out how much force we need.
0:12:59 > 0:13:03Unfortunately, we haven't anything to put your messages in.
0:13:03 > 0:13:05I've searched high and low.
0:13:05 > 0:13:09So, for the time being, we're going to use THESE...bags of jam.
0:13:09 > 0:13:12I'm sure we'll find something else,
0:13:12 > 0:13:15making sure it's the same weight. So catch these in that bowl!
0:13:15 > 0:13:18There's a few holes in it, but it'll be fine.
0:13:18 > 0:13:20- OK, let's try ten units of force?- Di.
0:13:24 > 0:13:25Oh, it went too far!
0:13:25 > 0:13:27Right, ten's way too much.
0:13:27 > 0:13:30So, let's try one. One unit of force.
0:13:33 > 0:13:38I don't think that's enough. What do you reckon? Five?
0:13:38 > 0:13:41Five. Let's go for five.
0:13:41 > 0:13:47Fire! Pretty good. Pretty good.
0:13:47 > 0:13:50Right, now we know the amount of force we need
0:13:50 > 0:13:53to deliver your messages. Let's build this thing!
0:14:03 > 0:14:05It's a good job there's a scrap yard down the road.
0:14:05 > 0:14:08- These engine parts are the right colour.- Yeah.
0:14:08 > 0:14:10- You wanted it to be black and red, didn't you?- Yeah.
0:14:10 > 0:14:12We've got that set at the right force.
0:14:12 > 0:14:15This is all coming together, my friend.
0:14:15 > 0:14:17But there's just one thing.
0:14:17 > 0:14:19- Yeah?- You see the water pistol?
0:14:19 > 0:14:22Where is it? I need it to spray everybody who comes near.
0:14:22 > 0:14:25Yeah. Yeah, yeah. I know about that. So, I was thinking
0:14:25 > 0:14:28we could use this. I use it to annoy Oucho.
0:14:28 > 0:14:29Have a look at this.
0:14:31 > 0:14:33OUCHO SQUEALS
0:14:33 > 0:14:35It's the gift that keeps on giving!
0:14:35 > 0:14:38Have you found anything to put the messages in yet?
0:14:38 > 0:14:41Yes, I've very nearly got that sorted.
0:14:41 > 0:14:44Yes, I have. It is pretty much done.
0:14:44 > 0:14:47It's all locked down. All right, cheers, mate. Thanks.
0:14:48 > 0:14:50Argh!
0:14:50 > 0:14:53Messages, messages...
0:14:53 > 0:14:54Ooh, cake!
0:14:54 > 0:14:56Buckaw! Buckaw!
0:15:00 > 0:15:02- Joshua! Joshua, look what I found. Tennis balls.- OK.
0:15:02 > 0:15:05We could cut these open and put your messages inside.
0:15:05 > 0:15:07Need to paint them red and black.
0:15:07 > 0:15:10Red and black tennis balls it is.
0:15:10 > 0:15:11What are these messages going to say?
0:15:11 > 0:15:14They're going to say when and where the party will be.
0:15:14 > 0:15:18Oh, great. Well, we're always up for a party, aren't we?
0:15:18 > 0:15:21Right, let's get this loaded up and then we can test it.
0:15:21 > 0:15:24So just make sure that goes all the way down.
0:15:24 > 0:15:27Joshua, launch the ball!
0:15:28 > 0:15:30OUCHO SPEAKS CACTINIAN
0:15:30 > 0:15:34What? No! We knew how much force we needed.
0:15:34 > 0:15:39That should have gone further. You don't love me, I'm not Dolly Parton.
0:15:39 > 0:15:42- OUCHO SPEAKS CACTINIAN - I haven't got a cowboy hat on.
0:15:42 > 0:15:44Right, we have to give this a serious rethink.
0:15:44 > 0:15:48This calls for tea and cake, and lots of it.
0:15:48 > 0:15:50- Back to the van!- Back to the van!
0:15:50 > 0:15:54Back to the van! Back to the van!
0:15:54 > 0:15:56Back to the van!
0:15:57 > 0:15:59No, that isn't better.
0:15:59 > 0:16:02We've still got no idea what's wrong. We must be missing something.
0:16:02 > 0:16:05OUCHO SPEAKS CACTINIAN
0:16:07 > 0:16:09I'm not asking Dr Destruction.
0:16:09 > 0:16:11He's not the loveliest scientist in world.
0:16:11 > 0:16:15- He's evil, and I'm not ringing him. - Oh, go on, Ed, he IS a scientist.
0:16:15 > 0:16:17An evil scientist!
0:16:17 > 0:16:21He'll take your Spy Buggy and turn it into a weapon of destruction.
0:16:21 > 0:16:25- OUCHO SPEAKS CACTINIAN - Oh, go on.- He's not lovely!
0:16:25 > 0:16:29OUCHO SPEAKS CACTINIAN
0:16:29 > 0:16:31The Big Big Cheese does not think he's lovely.
0:16:31 > 0:16:33Oh, the Big Big Cheese.
0:16:33 > 0:16:36We have to get that phone back in case he's trying to ring us.
0:16:36 > 0:16:39All right, for the sake of getting the sack,
0:16:39 > 0:16:41I'll ring an evil scientist.
0:16:41 > 0:16:44I bet Richard Hammond doesn't have these problems.
0:16:55 > 0:16:58PHONE RINGS
0:16:58 > 0:17:00Is that Dr Destruction?
0:17:00 > 0:17:03Destruction residence, evil do-monger and genius
0:17:03 > 0:17:08scientist Dr Destruction speaking, master of all that can be destroyed!
0:17:08 > 0:17:12- EVIL CACKLE - Why does he have to laugh so loudly?
0:17:12 > 0:17:14It's Ed Petrie here. I need some help.
0:17:14 > 0:17:19Need help, do you? Help doing what, causing right, chaos and plague?
0:17:19 > 0:17:22No. No. Look, we're building a Spy Buggy, and we need to
0:17:22 > 0:17:24launch messages through a window.
0:17:24 > 0:17:26The Spy Buggy of doom and destruction?
0:17:26 > 0:17:27CACKLES
0:17:27 > 0:17:30No, no, it's just a Spy Buggy.
0:17:30 > 0:17:32- Stop laughing like that and listen. - Sorry.
0:17:32 > 0:17:34CACKLES
0:17:34 > 0:17:38- Oops. Sorry.- Look, look, the messages keep going different
0:17:38 > 0:17:41distances, even though we're using the same force each time.
0:17:41 > 0:17:46Ah, sounds like you need knowledge of the angle
0:17:46 > 0:17:49- of trajectory. - Yes. Yes, perhaps we do, but
0:17:49 > 0:17:51I don't have a clue what that is.
0:17:51 > 0:17:55The distance your message travels is not only affected by its speed
0:17:55 > 0:17:58but also the angle you launch it at.
0:17:58 > 0:18:02Imagine you had two deadly laser beams of doom
0:18:02 > 0:18:08and fired them from the same spot but you rotated one away from the other.
0:18:08 > 0:18:12The space between them is called the angle.
0:18:12 > 0:18:15This angle is measured in degrees.
0:18:15 > 0:18:17But what does that mean for the Spy Buggy?
0:18:17 > 0:18:22Well, when throwing things, you always have gravity to contend with,
0:18:22 > 0:18:25which is always pulling everything to the ground.
0:18:25 > 0:18:29If you launch your messages at a high angle, although they will go up high,
0:18:29 > 0:18:32they will not go forward very fast.
0:18:32 > 0:18:37That means they will not go very far before they are pulled to the ground.
0:18:37 > 0:18:40But if you fire your messages at a low angle,
0:18:40 > 0:18:43they will not go very far either.
0:18:43 > 0:18:47Because although they are going forwards faster, they do not go
0:18:47 > 0:18:51very high, so they will hit the ground very quickly, and that is
0:18:51 > 0:18:53no use when one is planning destruction!
0:18:53 > 0:18:55CACKLES
0:18:55 > 0:18:57I said, stop laughing!
0:18:57 > 0:18:59Oh. Sorry.
0:18:59 > 0:19:03You have to find an angle which will allow your messages to go fast enough
0:19:03 > 0:19:08forwards and high enough to hit their target and destroy the world!
0:19:08 > 0:19:11Right, but how do we know what the angle is?
0:19:11 > 0:19:15Ah! Well, that's easy. You need an inclinometer.
0:19:15 > 0:19:17- A pink long metre?- Inclinometer.
0:19:17 > 0:19:24- An ink thermometer?- An inclinometer of evil, doom, destruction and chaos!
0:19:24 > 0:19:28Oh, an inclinometer, got you. What's that?
0:19:28 > 0:19:31- It's an angle-testing machine. - Ah, hang on, hang on.
0:19:31 > 0:19:33We've had one testing machine in this programme.
0:19:33 > 0:19:35We only do one test each show.
0:19:35 > 0:19:38If you want to make this Spy Buggy of doom and destruction and take over
0:19:38 > 0:19:42the world, you need to know the right force and angle,
0:19:42 > 0:19:45so you need another testing machine, an angle-testing machine.
0:19:45 > 0:19:47Right. OK, then.
0:19:47 > 0:19:50I don't suppose you've got an inclinometer, have you?
0:19:50 > 0:19:53Yes, I have the angle-testing machine and the inclinometer
0:19:53 > 0:19:55of death and destruction!
0:19:55 > 0:19:58Right. Right.
0:19:58 > 0:20:00- Can I borrow it? - If it will help you build a Spy Buggy
0:20:00 > 0:20:05of doom and destruction, then it will be my pleasure to lend it to you!
0:20:05 > 0:20:09CACKLES
0:20:09 > 0:20:10Great. Great.
0:20:10 > 0:20:12Erm, thank you!
0:20:12 > 0:20:15OK, Josh, here we are again.
0:20:15 > 0:20:18Now, Dr Destruction has lent me this inclinometer
0:20:18 > 0:20:20and angle-testing machine to find
0:20:20 > 0:20:22the right angle to deliver your messages.
0:20:22 > 0:20:24These fake windows are the same distance and height
0:20:24 > 0:20:27as the windows at your school.
0:20:27 > 0:20:29- Yes.- Now, unfortunately,
0:20:29 > 0:20:31I haven't painted those message balls.
0:20:31 > 0:20:34I've been so absent-minded! So instead, I'm firing this.
0:20:34 > 0:20:36They're balloons of custard.
0:20:36 > 0:20:37- So, are you ready?- Yep.
0:20:37 > 0:20:39Right, let's find the angle we need.
0:20:41 > 0:20:44Fire!
0:20:44 > 0:20:45Whoa!
0:20:45 > 0:20:48I tried to get that in the computer room window, but it was too low.
0:20:48 > 0:20:50Let's crank this up a bit.
0:20:50 > 0:20:53At a slightly higher angle this time.
0:20:53 > 0:20:54Fire!
0:20:54 > 0:20:56Yes! It went through! Yes!
0:20:56 > 0:21:00It's 49.7 degrees, that one. Let's move on to the library window now.
0:21:01 > 0:21:03Here we go!
0:21:03 > 0:21:08Oh, nearly. That was too low. Let's try a higher angle.
0:21:08 > 0:21:09Are you ready?
0:21:09 > 0:21:12- Yep.- Fire!
0:21:14 > 0:21:17Yes! Library window! It went through! Yes!
0:21:17 > 0:21:2054.7 degrees, it is.
0:21:20 > 0:21:23- We've got all the angles we need. You know what we can do now?- Yeah.
0:21:23 > 0:21:25BOTH: GET BUILDING!
0:21:31 > 0:21:34# This week's inventor was Josh from Willesden
0:21:34 > 0:21:37# With a car which launches messages and has a water gun
0:21:37 > 0:21:42# We needed it to help get our phone back, you see, cos Nelson
0:21:42 > 0:21:44# Had nicked it and was sat in a tree
0:21:44 > 0:21:48# Benson had some information that was worthwhile about
0:21:48 > 0:21:51# Applying enough force when throwing a projectile
0:21:51 > 0:21:55# Gravity will always bring it back down, of course, that's how gravity
0:21:55 > 0:21:57# Rolls, it's the invisible force
0:21:57 > 0:22:02# I said how about the Clumsy Twins' cannon, for instance?
0:22:02 > 0:22:04# Tested it, and Oucho set off into the distance.
0:22:04 > 0:22:07# Ours is fairly monstrous This was a minus
0:22:07 > 0:22:10# He travelled too far, so I called Johnny Sinus
0:22:12 > 0:22:17# Trajectory, the path an object takes through the air is curved
0:22:17 > 0:22:20# Trajectory
0:22:20 > 0:22:23# We got a tennis-ball firing machine and observed
0:22:27 > 0:22:30# Measure the distance so we knew how far
0:22:30 > 0:22:34# Worked out the force by gunging Joshua
0:22:34 > 0:22:37# It didn't work, what were we forgetting?
0:22:37 > 0:22:41# The balls were different distances, despite the same settings
0:22:41 > 0:22:44# Dr D had some advice that's hard to digest
0:22:44 > 0:22:48# Break with tradition, try another test
0:22:48 > 0:22:51# The distance something travels is not just down to speed
0:22:51 > 0:22:57# The angle of trajectory is what you need
0:22:57 > 0:22:59CLAPPING
0:22:59 > 0:23:04# Trajectory, the inclinometer really cut the mustard
0:23:04 > 0:23:11# Trajectory, so we fired balloons that were filled with custard
0:23:11 > 0:23:15# Excellent inventions. #
0:23:18 > 0:23:20Well, Joshua, here we are at your school
0:23:20 > 0:23:22with your completed Spy Buggy.
0:23:22 > 0:23:24To be honest, I'm quite surprised.
0:23:24 > 0:23:27What?! What do you mean? We haven't let anyone down yet.
0:23:27 > 0:23:31OUCHO SPEAKS CACTINIAN
0:23:31 > 0:23:33Apart from that one time.
0:23:33 > 0:23:35But they'll never show that on TV.
0:23:35 > 0:23:39Right, Joshua asked us to make him a Spy Buggy so that he could drive
0:23:39 > 0:23:42to school and deliver secret messages to his friends.
0:23:42 > 0:23:44- Shall we show everyone at home?- Yep. - Here it is!
0:23:48 > 0:23:50OUCHO SPEAKS CACTINIAN
0:23:50 > 0:23:54No, that's not it. No, you know that's not it, you helped build it.
0:23:54 > 0:23:56No, no, no, here it is!
0:24:02 > 0:24:05Pretty cool. Now, Joshua, quick checklist.
0:24:05 > 0:24:08Have you got the messages loaded up in those message balls?
0:24:08 > 0:24:12- Check.- Wonder if he's ever heard of emails.
0:24:12 > 0:24:15Do you know the angle to set the message launcher to deliver
0:24:15 > 0:24:18the messages to your friends in the library and the computer room?
0:24:18 > 0:24:20- Check.- And do you know the distance?
0:24:20 > 0:24:22- Check.- That's everything checked.
0:24:22 > 0:24:24- Right, we've got a party to organise.- Check!
0:24:24 > 0:24:26- Yes, check that.- Check.
0:24:26 > 0:24:28Yes, everything's checked.
0:24:28 > 0:24:30Get those balls airborne. Go!
0:25:08 > 0:25:12"Top secret: secret spy party message.
0:25:12 > 0:25:16- "Please attend. Time..." - "..after the school bell rings, OK?
0:25:16 > 0:25:18- "By the big tyre."- "Once read,
0:25:18 > 0:25:21"destroy all evidence of this message."
0:25:32 > 0:25:34How did it go, Joshua?
0:25:34 > 0:25:36- Great.- Did you deliver them all? - Yep.
0:25:36 > 0:25:38What time are your friends getting here?
0:25:38 > 0:25:40They should get here when the school bell rings.
0:25:40 > 0:25:42BELL RINGS
0:25:47 > 0:25:49Delicious!
0:25:58 > 0:25:59- Hey, guys, how's it going?- Di!
0:25:59 > 0:26:02- Great.- Joshua, we were just wondering, could we borrow
0:26:02 > 0:26:05- your invention for an hour or two? - Yeah.
0:26:05 > 0:26:07- Losserly.- We can get our phone back. - Di!
0:26:07 > 0:26:11- Hey, you!- Oh, I think there is a bit you haven't tested out yet.
0:26:11 > 0:26:13Quick, quick, guys, guys, over here.
0:26:13 > 0:26:16- Over here.- Who said you could have a party here?
0:26:16 > 0:26:18Aargh!
0:26:18 > 0:26:22THEY LAUGH
0:26:25 > 0:26:28- Right, we better get the Spy Buggy and get out of here.- Di!
0:26:28 > 0:26:31PHONE CHATTER
0:26:31 > 0:26:33What? What's that? What?
0:26:33 > 0:26:36What's happened to your sweet, sweet coos of love?
0:26:36 > 0:26:38Hey, go on, get out of here.
0:26:38 > 0:26:40Oh, the phone!
0:26:41 > 0:26:45Unbelievable! It fell down out of the tree after all that.
0:26:45 > 0:26:49What a relief. Hello?
0:26:49 > 0:26:51Oh, hello, boss.
0:26:51 > 0:26:54Yeah, I know we haven't been answering the phone.
0:26:54 > 0:26:59Yeah, we've had a few problems, but we did build a cracking invention.
0:26:59 > 0:27:01Yeah, well, I'll tell you about it later. Got to go.
0:27:01 > 0:27:04In a bit of a hurry. OK, love you!
0:27:04 > 0:27:05I mean...bye.
0:27:05 > 0:27:08OUCHO SPEAKS CACTINIAN
0:27:08 > 0:27:11- Yeah, I suppose I did handle her quite well there, yeah.- Di.
0:27:11 > 0:27:13Well, I think women respect this voice.
0:27:13 > 0:27:17It's the voice of authority, of dignity, the voice of a true...
0:27:17 > 0:27:19British gentleman.
0:27:19 > 0:27:22PIGEON COOS
0:27:26 > 0:27:28Yeah?
0:27:28 > 0:27:29OUCHO SPEAKS CACTINIAN
0:27:29 > 0:27:31Yeah, let's go, yeah.
0:27:31 > 0:27:35OUCHO SPEAKS CACTINIAN
0:27:35 > 0:27:38I know I smell of pigeon poo.
0:27:38 > 0:27:40OUCHO SPEAKS CACTINIAN
0:27:40 > 0:27:42No, I don't think women like that, either.
0:27:42 > 0:27:46OUCHO SPEAKS CACTINIAN
0:27:46 > 0:27:48Yeah, I feel like a bit of a fool.
0:27:48 > 0:27:50OUCHO SPEAKS CACTINIAN
0:27:50 > 0:27:52Yes, I know I've got pigeon poo on me!
0:27:52 > 0:27:54I think we've established that!
0:27:54 > 0:27:55OUCHO SPEAKS CACTINIAN