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A ball is dropped from a bridge at a height of 176.4 m over a river. After 2s a second ball is thrown straight downwards. What should be the initial velocity of the second ball so that both hit the water simultaneously ?A. 2.45 m/sB. 49 m/sC. 14.5 m/sD. 24.5 m/s |
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Answer» Correct Answer - D `F = v_("rel") ((dm)/(dt))` |
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