Unit 3 Lesson 2 Collisions

Collisions where objects BOUNCE apart.

• inelastic collisions

• elastic collisions

• explosions

• none of these

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NGSS.HS-PS2-2

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Momentum before = Momentum after

according to the Law of Conservation of __________________________.

• Momentum

• Energy

• Force

• Acceleration

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NGSS.HS-PS2-2

Two Pool Balls collide and then go separate directions.

• inelastic collision

• elastic collision

• explosion

• none of these

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NGSS.HS-PS2-2

Collision where objects collide, and stick together.

• inelastic collision

• elastic collision

• explosion

• none of these

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NGSS.HS-PS2-2

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For every action, there is an equal and opposite reaction.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• none of these

Which TWO variables determine the MOMENTUM for an object?

• time

• velocity

• density

• mass

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NGSS.HS-PS2-2

A trampoline increases __________________, which in turn decreases _____________________.

• force / time

• mass / weight

• time / force

• acceleration / velocity

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NGSS.HS-PS2-1

Action: Your foot applies a downward force onto the floor.

Reactiion?

• Your foot pushes through the floor.

• Your foot bounces off of the floor.

• The floor applies an equal and opposite force upward on your foot.

• The floor collapses.

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NGSS.HS-PS2-1

A car has 10,800 Kg x m/s of momentum as it collides with a trash dumpster AT REST. How much TOTAL MOMENTUM will the car and dumpster have after collision?

• Less than 10,800 Kg x m/s

• More than 10,800 Kg x m/s

• The same. 10,800 Kg x m/s

• Not enough information.

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NGSS.HS-PS2-2

What is the TOTAL MOMENTUM for the system BEFORE COLLISION?

• 14 Kg x m/s

• 10 Kg x m/s

• 24 Kg x m/s

• -24 Kg x m/s

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NGSS.HS-PS2-2