Momentum Quiz

Which of the following is a true statement about momentum?

• Momentum is a scalar quantity.

• Momentum is not conserved in elastic collisions.

• Momentum is the product of mass and velocity.

• Momentum can only be transferred through contact forces.

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NGSS.HS-PS2-2

In an inelastic collision, which of the following is conserved?

• Kinetic energy

• Momentum

• Velocity

• Mass

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NGSS.HS-PS2-2

What happens to the total momentum of a system if no external forces act on it?

• It increases over time.

• It decreases over time.

• It remains constant.

• It becomes zero.

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NGSS.HS-PS2-2

Which of the following scenarios best illustrates the conservation of momentum?

• A ball rolling uphill comes to a stop.

• Two ice skaters push off from one another and move in opposite directions.

• A car accelerates on a flat road.

• A ball dropped from a height bounces back up to a lower height.

Tags

NGSS.HS-PS2-2

In an elastic collision between two objects, which of the following is true?

• Only momentum is conserved.

• Only kinetic energy is conserved.

• Both momentum and kinetic energy are conserved.

• Neither momentum nor kinetic energy is conserved.

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NGSS.HS-PS2-2

What is the momentum of a 1500 kg car traveling at a velocity of 20 m/s?

• 30,000 kg·m/s

• 750 kg·m/s

• 15,000 kg·m/s

• 300 kg·m/s

Tags

NGSS.HS-PS2-2

If two objects collide and stick together, what type of collision is this?

• Perfectly elastic

• Perfectly inelastic

• Partially elastic

• Partially inelastic

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NGSS.HS-PS2-3

When considering the momentum of a system, why are vectors important?

• Because momentum depends only on the magnitude of velocity.

• Because momentum is not affected by direction.

• Because momentum is a vector quantity and direction matters.

• Because vectors simplify the calculation of momentum.

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NGSS.HS-PS2-2

A 5 kg object moving at 10 m/s collides with a 10 kg object at rest. If the collision is perfectly inelastic, what is the velocity of the combined mass after the collision?

• 3.33 m/s

• 5 m/s

• 7.5 m/s

• 10 m/s

Tags

NGSS.HS-PS2-2

If a 2 kg object moving east at 4 m/s collides with a 3 kg object moving west at 3 m/s, and they stick together after the collision, what is the final velocity of the combined object?

• 0.2 m/s east

• 1 m/s east

• 0.2 m/s west

• 1 m/s west

Tags

NGSS.HS-PS2-2