A2 Physics Unit 4 1 Forces & Momentum

Mr D Powell

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Chapter Map

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More Examples...

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1.2 Impact Forces

What happens to the impact force (and why?) if the duration of impact is reduced? How do we calculate Δ(mv) for a moving object which stops or reverses? What happens to the momentum of a ball when it bounces off a wall?

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Starter activity.....

Using Newton's second law which states; Force is proportional to the rate of change of momentum Can you derive the formula F = ma and explain why this is the

case?

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Impact Times

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Starter activity.....

• Using the ideas of momentum that you have just covered can you explain the momentum and rebound impacts at normal angles and at other angles.

• Also what will happen to the impact force of a gas particle on a wall when the angles change?

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Can you see the links... (there are two)

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