Topic 6 - Circular Motion (Edexcel A Level Physics)

What is Linear Momentum?

What is Angular Momentum?

What is Newton's First Law?

• An object will accelerate if no external forces are applied

• An object will accelerate if an external force is applied

• Acceleration is proportional to the force applied

• An object will stay at rest or a constant speed if no external forces are applied

What is Newton's Second Law?

• An object will accelerate if no external forces are applies

• An object will stay at rest or a constant speed if no external forces are applies

• F = ma

• The acceleration of an object is proportional to its rate of change in momentum

What is Newton's Third Law?

• If body A exerts a force on body B then body B will exert an equal and opposite force back

• If body A exerts a force on body B then body B will exert a bigger and opposite force back

• Body A stays at rest as long as body B applies no external forces

• If body A exerts a force on body B then body B will exert a force back

What is Impulse?

• Force over certain distance

• Force over a certain time

• Rate of change of force

• Rate of change of momentum

What are elastic collisions?

What are inelastic collisions?

What are perfectly inelastic collisions?

What is the Coefficient of restitution?

• A scale given to the rate of change of momentum in a body

• A scale given to the rate of change of force in a body

• A scale given to symbolise the collision that's occured

• A scale of 0 - 1:

  0 - Perfectly inelastic

  <1 - inelastic

  1 - elastic