Momentum and Collisions Quiz

What is the unit of momentum in the International System of Units (SI)?

• Newton (N)

• Joule (J)

• Kilogram meter per second (kg·m/s)

• Newton second (N·s)

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What does the principle of conservation of momentum state?

• The total momentum of a system decreases over time.

• The total momentum of a system is not conserved if external forces act on it.

• The total momentum of an isolated system remains constant if no external forces act on it.

• Momentum of individual objects in a system is conserved, but not the total momentum.

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In an elastic collision, which of the following quantities is conserved?

• Kinetic energy only

• Momentum only

• Both kinetic energy and momentum

• Neither kinetic energy nor momentum

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What is impulse equal to?

• The change in momentum

• The rate of change of force

• The product of force and time

• Both A and C

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Which of the following scenarios is an example of a perfectly inelastic collision?

• Two ice skaters pushing off each other and gliding apart

• Two billiard balls hitting each other and rebounding

• A clay ball hitting the ground and sticking to it

• Two cars bouncing off each other upon impact

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If the velocity of an object is doubled, what happens to its momentum and kinetic energy?

• Both are quadrupled.

• Momentum is doubled, kinetic energy is quadrupled.

• Momentum remains the same, kinetic energy is doubled

• Both are doubled.

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In a perfectly inelastic collision, what happens after the collision?

• The objects separate with different velocities.

• The objects stick together and move with a common velocity.

• The objects come to a complete stop.

• The objects rebound with no loss in kinetic energy.

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What is the momentum of a 5 kg object moving at a velocity of 10 m/s?

• 15 kg·m/s

• 50 kg·m/s

• 5 kg·m/s

• 10 kg·m/s

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If two objects collide and stick together, which type of collision is it?

• Elastic

• Perfectly inelastic

• Partially elastic

• Superelastic

What happens to the total kinetic energy in an inelastic collision?

• It increases.

• It decreases.

• It remains the same.

• It is completely converted to potential energy.