GCSE Physics Momentum Quiz

Momentum in collisions: A 500g ball moving at 8m/s collides with a stationary 300g ball. If the collision is perfectly elastic, what are the velocities of the two balls after the collision?

• 2m/s and 6m/s

• 5m/s and 3m/s

• 7m/s and 1m/s

• 3.6m/s and 4.4m/s

Conservation of momentum: What is the principle of conservation of momentum?

• Momentum is not conserved in a closed system

• Total momentum of a closed system remains constant if no external forces act on it.

• Momentum decreases with external forces

• Momentum increases with external forces

Conservation of momentum: State the equation for the conservation of momentum in a closed system.

• total initial momentum = total final momentum

• total initial momentum = total kinetic energy

• total initial momentum = total mass

• total initial momentum = total initial velocity

Conservation of momentum: Explain how momentum is conserved in an isolated system.

• Momentum is conserved only if the objects involved are at rest

• Momentum is conserved only if the objects involved are in motion

• Momentum is conserved only if the objects involved have the same mass

• Momentum is conserved in an isolated system by ensuring that the total momentum before an event is equal to the total momentum after the event.

Conservation of momentum: A 2kg object moving at 4m/s collides with a stationary 3kg object. What is the velocity of the two objects after the collision?

• The velocity of the 2kg object after the collision is 3 m/s, and the velocity of the 3kg object after the collision is 1 m/s.

• The velocity of the 2kg object after the collision is 2 m/s, and the velocity of the 3kg object after the collision is 2 m/s.

• The velocity of the 2kg object after the collision is 1.33 m/s, and the velocity of the 3kg object after the collision is 2 m/s.

• The velocity of the 2kg object after the collision is 4 m/s, and the velocity of the 3kg object after the collision is 0 m/s.

Momentum in collisions: A 1000kg car traveling at 20m/s collides with a stationary 2000kg truck. If the collision is inelastic, calculate the final velocity of the two vehicles.

• 10 m/s

• 25 m/s

• 15 m/s

• 6.67 m/s

Momentum in explosions: Explain the concept of momentum in explosions.

• Momentum increases in explosions

• Momentum decreases in explosions

• Momentum is not relevant in explosions

• Momentum is conserved in explosions.

Momentum in explosions: A 2kg explosive breaks into two pieces, one with a mass of 1.5kg and the other with a mass of 0.5kg. If the 1.5kg piece moves at 4m/s, what is the velocity of the 0.5kg piece?

• 2m/s

• 16m/s

• 12m/s

• 8m/s

Momentum in explosions: A 5kg object explodes into two pieces, one with a mass of 3kg and the other with a mass of 2kg. If the 3kg piece moves at 2m/s, what is the velocity of the 2kg piece?

• 5m/s

• 1m/s

• 3m/s

• 4m/s

Momentum in collisions: A 1kg ball moving at 5m/s collides with a stationary 2kg ball. If the collision is perfectly elastic, what are the velocities of the two balls after the collision?

• 3m/s and 2m/s

• 4m/s and 1m/s

• 2.5m/s and 2.5m/s

• 1.67m/s and 3.33m/s