GCSE AQA Physics The Workbook – Helena Helena (1)

You may need to use some words more than once, or not at all. decelerates decrease less balances increase constant greater accelerates When a skydiver jumps out of a plane, his weight is than his air resistance, so he downwards. This causes his air resistance to his weight.

At this point, his We lOC IU ats meee in caleiccnaserceape ct . When his parachute opens, his air resistance is thanehis weightasownets lait… 4. aereseteas es oe : This causes his air resistance to until it his weight. Then his velocity is once again. Which of the following will reduce the air resistance force on an aeroplane?

Tick any appropriate boxes. . [ | flying higher (where the air is thinner) [ | carrying less cargo [ | flying more slowly [sl making the plane more streamlined A scientist plans to investigate gravity by dropping a hammer and a feather from a tall building. Two onlookers predict what will happen. Say whether each is right or wrong, and explain why.

Paola: “They will land at the same time — gravity is the same for both.” Guiseppe: “The feather will reach its terminal velocity before the hammer.” a) Paola is right / wrong because Mavis is investigating drag by dropping balls into a measuring cylinder full of oil and timing how long they take to reach the bottom. She does the experiment with a golf ball, a glass marble and a ball bearing. From this experiment, can Mavis draw any conclusions about ‘ the effect of size on drag? Explain your answer.

Physics 2a — Motion, Energy and Electricity Frictional Force and Terminal Velocity The graph shows how the velocity of a skydiver changes before and after he opens his parachute. Velocity For each of the four regions A-D tick the correct box to say whether the force of weight or air resistance is greater, or if they are equal.

weight is greater air resistance is greater both equal Region A: [| [ | [ | Region B: lind | ihe [ | Regionc: [_] [_] ine RegionD: [_] iz ie Two skydivers jump out of a plane. Kate opens her parachute after three seconds, when she is still accelerating rapidly. Alison doesn’t open her parachute yet but uses her video camera to film Kate’s skydive.

On the film Kate’s parachute appears to pull her suddenly upwards when it opens. Is Kate really’moving Upwards?

Physics Formulae — How to Deal with Them If formulae just look like a load of weird symbols and nonsense to you, then you’re never going to get very far with Physics, that’s for sure. Formulae are the Physics alphabet and without them, you’re… in trouble. Formula Triangles It’s dead important to learn how to put any formula into a triangle. There are two easy rules: 1) If the formula is “A = BxC” then A goes on the top and BXC goes on the bottom.

2) \f the formula is “A = B/C” then B must go on the top (because that’s the only way it’ll give “B divided by something”) — and so pretty obviously A and C must go on the bottom. _ | Three Examples: s=vxXt } turns into: 7 W=Fxd turns into: _, How to use them: Cover up the thing you want to find and write down what’s left showing.

EXAMPLE: To find t from the last one, cover up t and you get s/v left showing, so “t = s/v”. Using Formula Triangles — the Three Rules: 1) Eind_a formula which contains the thing you want to find together with the other things which you’ve got values for. Convert that formula into a formula triangle. 2) Stick the numbers in and work out the answer. 3) Think very carefully about all the units — and check that the answer is sensible.

Some Awkward Formulae Don’t Fit in Triangles If you have a formula like: a = ) …then there’s no way it’s going to fit in a formula triangle. I’m afraid with these weirdy formulae, YOU JUST HAVE TO LEARN THEM AS THEY ARE. Yourwia A ley GCSE AQA Physics The Workbook This book is for anyone doing GCSE AQA Physics.

It’s full of tricky questions… each one designed to make you sweat — because that’s the only way you’ll get any better. There are questions to see what facts you know. There are questions to see how well you can apply those facts. And there are questions to see what you know about how science works. It’s also got some daft bits in to try and make the whole experience at least vaguely entertaining for you.

This is a short excerpt from the opening of “” by Unknown, quoted for review and introduction purposes. All rights belong to the copyright holders.

Book Information

• Unique ID: 81dd48798a646026
• File Extension: .pdf
• File Size: 9,973,139 bytes (9.511 MB)
• Title: –
• Author: Unknown
• ISBN: 9781847626288
• Pages: 149
• Language: English (en)

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• Estimated Reading Time: 176.32 minutes
• Total Words: 35,264
• Total Characters: 204,674
• Average Words per Page: 236.67
• Average Characters per Page: 1373.65

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