a cart moving at 10 m/s is brought to a stop by the force plotted in the force-time graph shown here. find the impulse and the approximate mass of the cart. show all your work.
a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earth’s velocity. earth’s mass is 6.0 x 10^24 kg .show all your work, assuming the rock-earth system is closed.
explain why a rapidly spinning gyroscope, mounted in a frame that allows it to rotate in any direction independently of the frame’s rotation, tends to maintain its axis pointed in the same direction in space.
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