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During a storm, the rain falls directly with a speed V0 = -15m / s hits...

During a storm, the rain falls directly with a speed V0 = -15m / s hits the roof of a car perpendicularly. The mass of rain per second that hits the car Vf = 0 m / s, find the force the average force exerted by the rain on the roof
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Answer #1

The force on the roof of the car is equal to the change in momentum of the rain.

F=m(Vf-V0)

=m(0+15)

=15m N

Here,m is mass of the rain drops per second.

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