Momentum and Impulse

A marble moving at 0.2 m/s strikes another identical marble, which is at rest. If this is a perfectly elastic collision, which of the following statements best describe the marbles AFTER the collision?

• The moving marble bounces off in the opposite direction and the other marble remains at res

• The moving marble stops, and the other marble moves off at 0.2 m/s

• The moving marble moves forward at 0.1 m/s and the resting marble moves forward at 2 m/s

• The marbles stick together and move forward at 0.1 m/s

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NGSS.HS-PS2-2

The linear momentum of an object can be calculated by multiplying the velocity of the object by its

• energy

• acceleration

• force

• mass

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NGSS.HS-PS2-2

NGSS.HS-PS2-1

If both are moving at a velocity of 10m/s, which would have more momentum, an elephant or a baby?

• The elephant

• The baby

• Both have the same momentum

• Both have zero momentum

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NGSS.HS-PS2-2

A sumo wrestler wants to double his momentum. Which of the following will double his momentum?

• If he weighs half as much

• If he runs 4 times faster

• If he runs at half speed

• If he doubles his mass

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NGSS.HS-PS2-2

What variable represents momentum?

• m

• p

• v

• mm

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NGSS.HS-PS2-2

Bill Nye (75 kg) is running from a fire with a velocity of 15 m/s. What is his momentum?

• 3 kg m/s

• 1,125 kg m/s

• 90 kg m/s

• 60 kg m/s

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NGSS.HS-PS2-2

A 2000 kg car moves to the right with a speed of 30 m/s and collides with a 400 kg truck that is stationary. If this is an inelastic collision, what is the velocity of the car and truck after collision?

• 150 m/s

• 25 m/s

• 60,000 m/s

• 12,000 m/s

Tags

NGSS.HS-PS2-2

What is the velocity of an object that has a momentum of 72 kg m/s and a mass of 4 Kg?

• 18 m/s

• 0.06 m/s

• 288 m/s

• 76 m/s

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NGSS.HS-PS2-2

Calculate the momentum of a 50 kg driver moving at a velocity of +17.4 m/s

• 67.4 kg m/s

• 870 kg m/s

• 2.87 kg m/s

• 32.6 kg m/s

Tags

NGSS.HS-PS2-2

What is inertia

• Inertia is the property of matter that resists changes in motion

• Inertia is a collision that causes one or more objects to change velocity

• Inertia is change in momentum

• inertia is an increase in mass

Tags

NGSS.MS-PS2-2