Physics 2nd Semester Review Part 1

What is momentum?

• The ability to stop a moving object

• The mass of an object

• The product of an object's mass and velocity

• The force acting on an object

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What happens to the momentum of an object if its mass increases but its velocity stays the same?

• Momentum decreases

• Momentum stays the same

• Momentum increases

• Momentum becomes zero

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Which unit is used to measure momentum?

• Kilogram (kg)

• Meter per second (m/s)

• Newton (N)

• Kilogram meter per second (kg·m/s)

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NGSS.HS-PS2-2

What does impulse refer to?

• The speed of an object

• The change in an object's velocity

• The force applied to an object over time

• The weight of an object

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How is impulse related to momentum?

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What is the unit of impulse?

• Newton (N)

• Kilogram (kg)

• Newton second (N·s)

• Meter per second (m/s)

If a person pushes a sled with a force of 10 N for 5 seconds, what is the impulse?

• 2 N·s

• 10 N·s

• 50 N·s

• 10 N

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A car is moving at 20 m/s and has a mass of 1000 kg. What is its momentum?

• 1000 kg·m/s

• 20000 kg·m/s

• 50000 kg·m/s

• 10000 kg·m/s

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NGSS.HS-PS2-2

Which of the following would cause an increase in momentum?

• Decreasing mass while keeping velocity constant

• Increasing velocity while keeping mass constant

• Decreasing velocity while keeping mass constant

• Reducing the force applied

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NGSS.HS-PS2-2

A small car and a large truck have the same momentum. Which one has a higher velocity?

• The car

• The truck

• They both have the same velocity

• It depends on their masses

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NGSS.HS-PS2-2