Momentum Physics

Which of the following situations is an example of a visible change in momentum?

• A hiker walks through a spider’s web

• A car drives over a pebble

• A volleyball hits a mosquito in the air

• A baseball is hit by a bat.

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NGSS.HS-PS2-2

Two objects stick together and move with a common velocity after colliding. Identify the type of collision

• Elastic

• Inelastic

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NGSS.HS-PS2-2

Two billiard balls collide. Momentum and KE are conserved. Identify the type of collision.

• Elastic

• Inelastic

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NGSS.HS-PS2-2

A billiard ball collides with a stationary identical billiard ball in an elastic head-on collision. After the collision, which of the following is true of the first ball?

• It maintains its initial velocity

• It has one-half its initial velocity

• It comes to rest

• It moves in the opposite direction

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NGSS.HS-PS2-2

An object that has momentum can be described as _________

• changing its velocity

• moving fast

• resisting changes in its state of motion

• having its mass in motion

• encountering a net force

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NGSS.HS-PS2-2

Which one of the following units represents the standard metric units of momentum

• Newtons * meter / second

• Kilograms * meter / second²

• meter / second

• Kilograms * meter / second

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NGSS.HS-PS2-2

A freight car of mass 20,000kg moves along a track at 15 m/s. What is the momentum of the car?

• 30,000 kg*m/s

• 3,000 kg*m/s

• 300,000 kg*m/s

• 3,000,000 kg*m/s

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NGSS.HS-PS2-2

A 10 kg object moves at 2 m/s to the right and collides with a 4 kg object moving at 5 m/s to the left. The total momentum is_____

• 20 kg*m/s

• 40 kg*m/s

• 10 kg*m/s

• 30 kg*m/s

• 0 kg*m/s

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NGSS.HS-PS2-2

In a completely inelastic collision...

• only momentum is conserved

• only energy is conserved

• both momentum and energy are conserved

• neither momentum nor energy are conserved

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NGSS.HS-PS2-2

Which one of these objects has the greater amount of momentum?

• A turtle that slowly crosses a road

• A parked car

• A stop sign

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NGSS.HS-PS2-2