A ball is thrown vertically upwards. It was observed at a height h twice with a time interval deltat. Find the initial velocity in terms of g, h and deltat
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https://www.meritnation.com/ask-answer/question/a-ball-is-thrown-vertically-upwards-it-was-observed-at-a-hei/motion-in-a-plane/6152527
https://www.meritnation.com/ask-answer/question/a-ball-is-thrown-vertically-upwards-it-was-observed-at-a-hei/motion-in-a-plane/6152527