(P12.229)-A passenger in an automobile observes that raindrops make an angle of 30° with the horizontal as the auto....

(P12.229)-A passenger in an automobile observes that raindrops make an angle of 30° with the horizontal as the auto travels forward with a speed of 60 km/h. Compute the terminal (constant) velocity vr of the rain if it is assumed to fall vertically.

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