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physical science

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During a rain storm, rain comes straight down with a velocity -15 m/s and hits the roof of a car perpendicularly. The mass of the rain per second that strikes the roof is .060 kg every second. Assuming that the rain cones to rest upon stiking the car (Vf =0m/s), fund the average force exerted by the rain on the roof during a 3 second time interval.

  • physical science - ,

    force*time=change (mass*velcocity)
    force*3=.060*3*15
    solve for force.

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