Before starting this problem, review Conceptual Example 3. The hall comes straig

Question

Before starting this problem, review Conceptual Example 3. The hall comes straight down at a mass rate of m/delta t = 0.0690 kg/s and an initial velocity of v_0 = 15.0 m/s, Suppose that the hail described there bounces off the roof of the car with a velocity of +13.8 m/s. 1gnoring the weight of the hailstones, calculate the magnitude of the force exerted by the hail on the roof. Compare your answer to that obtained in Example 2 for the rain, and verify that your answer is consistent with the conclusion reached in Conceptual Example 3. Number Units

Explanation / Answer

F = p/t = m v/t = v * m/t
= 28.8m/s * 0.069 kg/s
= 1.987 kg m / s^2
= 1.9872 N

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