Created by StemPy LabA train moves due east at . A girl inside throws a ball out of the window towards the north, at relative to the train. Just after it leaves her hand, the ball's velocity relative to the ground is
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← An air-hockey puck moving with velocity (4î + 3ĵ) m/s hits the side board and leaves it with velocity (-4î + 3ĵ) m/s. The contact lasts 0.02 s. What is its average acceleration during the bounce?At a crossroads, car A moves east at 20 m/s and car B moves north at 15 m/s, as the figure shows. What is the velocity of car A as seen by the driver of car B? →
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