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anonymous

  • 4 years ago

A car is slowing down in a certain time t. They give you mass, initial velocity, velocity. Find the force that slowed it down. Find the power needed to keep the car at a consant velocity

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  1. anonymous
    • 4 years ago
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    The acceleration can be found from \[a = {\Delta v \over \Delta t}\]With the acceleration and mass, we can find the associated force from \[F = m \cdot a\]The power can be found from\[P = F \cdot v\]

  2. anonymous
    • 4 years ago
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    thanks eashmore that helps alot

  3. anonymous
    • 4 years ago
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    Would the force be negative tho for part a because it is slowing the car down or no?

  4. anonymous
    • 4 years ago
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    Negative relative to the car's initial motion, yes.

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