Parachute Brain Freeze
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Transcript
| Line | From | To | |
|---|---|---|---|
It's only a parachute jump, it's only a parachute jump... | 0:00:02 | 0:00:05 | |
You're in safe hands, McCork, | 0:00:05 | 0:00:07 | |
I'm a qualified instructor, remember? | 0:00:07 | 0:00:09 | |
It's only a parachute jump... | 0:00:09 | 0:00:11 | |
That's it, McCork, stay calm and focused, just like we practised. | 0:00:11 | 0:00:15 | |
All systems checked and ready to go, Ms Hucklebuck. | 0:00:15 | 0:00:18 | |
Roger that! | 0:00:18 | 0:00:19 | |
We're cleared for take off! | 0:00:19 | 0:00:21 | |
It's only a parachute jump... | 0:00:21 | 0:00:23 | |
-TANNOY: -All passengers, please, prepare for takeoff. | 0:00:23 | 0:00:26 | |
Hang on, we're doing a parachute jump! | 0:00:26 | 0:00:28 | |
Aaargh! | 0:00:28 | 0:00:30 | |
We're live in the sky in five, four... | 0:00:30 | 0:00:33 | |
This is Brain Freeze! | 0:00:33 | 0:00:35 | |
With Dr Knowles, | 0:00:35 | 0:00:38 | |
Professor McCork... | 0:00:38 | 0:00:40 | |
..Colin, the floor manager | 0:00:41 | 0:00:43 | |
and Ms Hucklebuck! | 0:00:43 | 0:00:45 | |
Stand by! | 0:00:45 | 0:00:48 | |
Come on, everybody! | 0:00:48 | 0:00:50 | |
Welcome to Brain Freeze, sky-dive special! | 0:00:50 | 0:00:53 | |
It's time for... | 0:00:53 | 0:00:54 | |
Today we're going to find out first hand, how does a parachute work? | 0:00:57 | 0:01:02 | |
When an object is falling from the sky, | 0:01:02 | 0:01:04 | |
the force of gravity pulls it towards Earth. | 0:01:04 | 0:01:06 | |
The size and shape of the object itself | 0:01:06 | 0:01:09 | |
provides some air resistance, or drag, | 0:01:09 | 0:01:11 | |
but this can be significantly increased by using a parachute. | 0:01:11 | 0:01:14 | |
When opened, a parachute creates a large surface area | 0:01:14 | 0:01:18 | |
which increases the air resistance and causes the object to slow down. | 0:01:18 | 0:01:21 | |
And what are they used for? | 0:01:25 | 0:01:26 | |
Other than eejits like us jumping out of planes. | 0:01:26 | 0:01:29 | |
Apart from sky-diving, parachutes are also used in | 0:01:29 | 0:01:32 | |
humanitarian missions, space exploration | 0:01:32 | 0:01:35 | |
and even in resistance training by athletes. | 0:01:35 | 0:01:38 | |
You're all set to jump, Ms Hucklebuck. | 0:01:38 | 0:01:40 | |
In your own time! | 0:01:40 | 0:01:41 | |
Roger that! To see how a parachute works live, | 0:01:41 | 0:01:45 | |
join us after the break! | 0:01:45 | 0:01:48 | |
And we're clear! | 0:01:48 | 0:01:50 | |
Now, paint yourself a nice picture, McCork. | 0:01:50 | 0:01:52 | |
It's just a big, soft, safe airplane. | 0:01:52 | 0:01:56 | |
A big, soft, safe airplane. | 0:01:56 | 0:01:58 | |
With huge, cuddly wings, carrying you high | 0:01:58 | 0:02:00 | |
above the safe, fluffy clouds. | 0:02:00 | 0:02:02 | |
Huge, cuddly wings. Safe, fluffy clouds. | 0:02:02 | 0:02:06 | |
Ready to jump, McCork? | 0:02:06 | 0:02:08 | |
Jump! I forgot we had to jump! | 0:02:08 | 0:02:10 | |
I never signed up for this! | 0:02:10 | 0:02:13 | |
BELL RINGS | 0:02:13 | 0:02:14 | |
Hold on tight, McCork! | 0:02:14 | 0:02:15 | |
We're going live on air, in the air | 0:02:15 | 0:02:18 | |
in three, two, one... | 0:02:18 | 0:02:21 | |
Aaaaaah! | 0:02:21 | 0:02:24 | |
Now, let's see how a parachute works in real life. | 0:02:29 | 0:02:34 | |
When in freefall, a skydiver can | 0:02:34 | 0:02:37 | |
fall to Earth at speeds of over 190kph. | 0:02:37 | 0:02:40 | |
Can we open the parachute? | 0:02:40 | 0:02:42 | |
When the downward force of the skydiver's weight | 0:02:42 | 0:02:45 | |
equals the upward force of the air resistance, | 0:02:45 | 0:02:47 | |
we call this Terminal Velocity. | 0:02:47 | 0:02:50 | |
How about now, maybe? | 0:02:50 | 0:02:52 | |
Anyone? | 0:02:52 | 0:02:54 | |
Once the parachute is opened, the sky-diver's descent | 0:02:54 | 0:02:57 | |
is slowed down significantly. | 0:02:57 | 0:02:58 | |
Hello? Parachute? Falling through the sky! | 0:02:58 | 0:03:02 | |
Oh, yes! I knew there was something I was forgetting! | 0:03:02 | 0:03:05 | |
And they float back to Earth at the much safer speed of about 17kph. | 0:03:07 | 0:03:13 | |
Ah, this is much better. I could get used to this. | 0:03:13 | 0:03:16 | |
-Can we do it again? -See you next time! | 0:03:16 | 0:03:19 | |
And we're clear! | 0:03:21 | 0:03:22 | |
-More tea, McCork? -A splendid idea, Ms Hucklebuck. | 0:03:22 | 0:03:26 | |
So is this what they mean by high tea? | 0:03:26 | 0:03:31 | |
Ha-ha-ha! Good one, Ms Hucklebuck! | 0:03:31 | 0:03:34 | |
Well done, McCork! | 0:03:34 | 0:03:36 | |
You got there in the end! | 0:03:36 | 0:03:37 | |
I took your advice, Colin. | 0:03:37 | 0:03:39 | |
There's nothing like a nice cup of tea to calm your nerves. | 0:03:39 | 0:03:42 | |
Well, usually the tea comes after you've landed, but whatever works! | 0:03:42 | 0:03:46 | |
What? Landed? You mean back on the ground? | 0:03:46 | 0:03:50 | |
I forgot we had to land! | 0:03:50 | 0:03:52 | |
No, I never signed up for this! | 0:03:52 | 0:03:56 | |
Aaah! | 0:03:56 | 0:03:58 | |
This is nice once you get used to it! | 0:03:58 | 0:04:00 | |
I think I can see my house from here. | 0:04:01 | 0:04:03 | |
More tea, Ms Hucklebuck? | 0:04:05 | 0:04:07 | |
Milk? | 0:04:07 | 0:04:08 | |
Brain Freeze! | 0:04:08 | 0:04:10 |
