1.14 momentum 2 (conservation of momentum)

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5 Terms

1
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What is the law of conservation of momentum?

The total momentum of a system remains constant provided no external forces act on the system.

2
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What is meant by a closed system?

A system in which no external forces act.

3
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When is momentum conserved?

During collisions and explosions, provided the system is closed.

4
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Why must direction be considered when calculating momentum?

Because momentum is a vector quantity.

5
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What happens to momentum before and after a collision in a closed system?

The total momentum before the collision is equal to the total momentum after the collision.