Changes In Momentum (physics Only) (GCSE Physics)

A moving object’s momentum doubles. Which of the following could have happened?

A skateboarder (total mass 60 kg) moving at 6 m/s applies brakes that provide a constant backward force producing an impulse of -360 N·s. What is the skateboarder’s final speed?

A bus of mass 12 000 kg and a car of mass 1200 kg are moving at the same speed. Which has greater momentum?

During an explosion a stationary shell of mass 10 kg breaks into two fragments of 3 kg and 7 kg which fly apart with velocities +8 m/s and v m/s respectively. What is v?

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)?

Which equation correctly links force (F), time (?t) and change in momentum (?p)?

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

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?

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

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?

A 2.0 kg object moving at 3.0 m/s collides with and sticks to a 3.0 kg object at rest. What is their common speed immediately after collision?