Overheated train engine causes smoke, delays at North Station

SOLVED: The smokestack of a stationary toy train consists of a vertical spring gun that shoots a steel ball a meter or so straight into the air—so straight that the ball always falls back into the smokestack. Suppose the train moves at constant speed along the straight track. Do you think the ball will still return to the smoke-stack if shot from the moving train? What if the train gains speed along the straight track? What if it moves at a constant speed on a circular track? Discuss why your an

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