University Physics with Modern Physics with Mastering Physics (11th Edition)

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8.66: The total mass of the car is changing, but the speed of the sand as it leaves the car is the same as the speed of the car, so there is no change in the velocity of either the car or the sand (the sand acquires a downward velocity after it leaves the car, and is stopped on the tracks after it leaves the car). Another way of regarding the situation is that
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Unformatted text preview: ex v in Equations (8.37), (8.38) and (8.39) is zero, and the car does not accelerate. In any event, the speed of the car remains constant at 15.0 m/s. In Exercise 8.24, the rain is given as falling vertically, so its velocity relative to the car as it hits the car is not zero....
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This document was uploaded on 02/04/2008.

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