While a car is stopped at a traffic light in a storm, raindrops strike the roof of the car. the area of the roof is 5.0 m2. each raindrop has a mass of 3.7 ✕ 10−4 kg and speed of 2.5 m/s before impact and is at rest after the impact. if, on average at a given time, 150 raindrops strike each square meter, what is the impulse of the rain striking the car?

J = 0.693 N.s

Explanation:

The impulse of one single drop is given by:

J1 = m*(Vf - Vo)   where Vf = 0

The magnitude of the total impulse will be:

Jt = J1 * 150 * 5

Jt = 0.693 N.s

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