Conservation of Momentum

A shotgun fires a 0.015 kg slug at a speed of 900 m/s. The shotgun itself has a mass of 3.5 kg. What is the recoil speed of the shotgun?

• 3.86 m/s

• 2.50 m/s

• 5.10 m/s

• 1.20 m/s

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NGSS.HS-PS2-2

A 2.0 kg arrow is fired at 10 m/s into a stationary 10 kg block of ice. The arrow sticks into the block of ice. What is the velocity of the arrow / ice combination after the collision?

• 2.5 m/s

• 10 m/s

• 1.7 m/s

• 5.0 m/s

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NGSS.HS-PS2-2

Which of the following most accurately describes conservation of momentum?

• 1. Momentum is always conserved, even when external forces are present.

• Momentum can only be conserved in systems where objects are stationary.

• The total momentum of a system remains constant if no external forces act on it.

• 1. Momentum conservation means all objects in a system move at the same speed.

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NGSS.HS-PS2-2

What is the total momentum before the collision?

• +13000 kg*m/s

• -3000 kg*m/s

• -13000 kg*m/s

• +3000 kg*m/s

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NGSS.HS-PS2-2

What is the total momentum of this system?

• 54 kgm/s

• -54 kgm/s

• -3 m/s

• 56 kgm/s

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NGSS.HS-PS2-2

What is the initial velocity of the pink object?

• -9 m/s

• 117 kgm/s

• -117 kgm/s

• -10.6 m/s

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NGSS.HS-PS2-2

NGSS.HS-PS2-1

The picture shows what type of collision?

• Elastic, Inelastic and Perfectly Inelastic Collision

• Inelastic Collision

• Perfectly Inelastic Collision

• Elastic Collision

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NGSS.HS-PS2-2

This picture is an example of ____________

• Elastic Collision
• Inelastic collision

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NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, select the ball(s) that will move when balls 1 and 2 collide with the rest of Newtons Cradle.

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NGSS.HS-PS2-2

According to the law of Conservation of Momentum, which ball(s) will move once the ball on the far right collides with the rest of Newton's cradle?

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NGSS.HS-PS2-2