Momentum and Impulse Review

If you double your mass, your momentum

• doubles

• triples

• stays the same

• decreases.

The momentum of an object at rest is

• 0 m/s

• 0 kg

• 0 kg x m/s

• equal to the potential energy

Tags

NGSS.HS-PS2-2

The equation to calculate momentum is

• p=mv
• p=1/2mv²
• p=mgh
• p=mg

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NGSS.HS-PS2-2

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

• 14.4 kg
• 1400 kg
• 144 kg
• 360 kg

Tags

NGSS.HS-PS2-2

The impulse is ______ the change in momentum

• Greater than
• Equal to
• less than
• always double

Tags

NGSS.HS-PS2-2

You can use an impulse to stop an egg without breaking it by applying a

• small force over a longer time
• small force over a shorter time
• large force over a longer time
• large force over a shorter time

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

The purpose of crumple zones on a car is to

• decrease time of impact.
• increase force of impact.
• increase the time of impact.
• decrease the impulse during impact.

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NGSS.HS-PS2-1

NGSS.HS-PS2-3

Which of the following has the greatest momentum?

• 0.5 kg dog moving at 200 m/s

• 10 kg child moving at 30 m/s

• 100 kg adult moving at 2 m/s

• All have the same momentum

Tags

NGSS.HS-PS2-2

A car with a mass of 1000 kg moves at 20 m/s. What average braking force is needed to bring the car to a halt in 10 seconds?

• 20,000 N

• 0.2 N

• 100 N

• 2,000 N

A car with a mass of 1000 kg moves at 20 m/s. What average braking force is needed to bring the car to a halt in 10 seconds?

• 20,000 N

• 0.2 N

• 100 N

• 2,000 N