Changes In Momentum (physics Only) (GCSE Physics)

A 5.0 kg object accelerates from 2.0 m/s to 12.0 m/s in 4.0 s. What average force acted on it?

A 0.8 kg ball is moving right at 10 m/s and strikes a wall, reversing to left at 6 m/s. If contact time is 0.04 s, what average force acted on the ball (magnitude)?

A constant resultant force of 120 N acts on a 4.0 kg object for 2.0 s. What impulse does the force produce?

A lorry of mass 2000 kg slows from 20 m/s to 5 m/s in 10 s. What is the change in momentum of the lorry?

A ball of mass 0.40 kg moving right at 10 m/s collides elastically with a stationary ball of mass 0.40 kg. After collision what is speed of the first ball?

Which safety feature reduces the force on a passenger by increasing the time over which momentum is brought to zero?

Which scenario shows momentum is a vector quantity?

A 0.25 kg ball moving at 8.0 m/s hits a wall and rebounds with speed 6.0 m/s in the opposite direction. What is the magnitude of the change in momentum of the ball?

If a car of mass 1200 kg traveling at 15 m/s is brought to rest by a constant braking force of 18 000 N, how long does braking take?

A 0.15 kg pellet is fired at 200 m/s and embeds in a wooden block of mass 2.0 kg at rest. What speed does block+pellet have immediately after?

A figure shows a car stopping with seatbelt vs without. Which explanation correctly describes why the seatbelt reduces injury?