Impulse and momentum thing

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9 Terms

1
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Object with more momentum requires more time or more force to stop.

Newto’s Third Law

2
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Haystack because if the change in momentum occurs over long time, the change is small

  • If you were in a car that is out of control, would you rather hit a concrete wall or a haystack?

3
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Vector

Momentum is a ?? because it has magnitude and direction

If it were just magnitude it would be scalar

impulse is magnitude

4
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Momentum

It is a measure of how hard it is to stop an object

5
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Impulse

is a force over a period of time

6
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elastic collisions

– kinetic energy is conserved in addition to momentum

7
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inelastic collisions

–only momentum is conserved, NOT energy (lost to heat or deformation)

8
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Perfectly inelastic collisions

– objects stick together; only momentum is conserved (energy lost to heat or deformation)

9
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Law of conservation of momentum

: the momentum of a system remains constant in a closed, isolated system