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OpenStudy (anonymous):
A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second? answeres: A. 5.1m B. 9.8m C. 25m D. 15m
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OpenStudy (shamim):
OpenStudy (shamim):
c my attachment
OpenStudy (rajat97):
the answer is d) 15m yoiu can solve it by using kinematical equation v^2-u^2=2as here v=10 u=0 and a=-10 so you will get the value of s=-5 so the distance from ground=20-5=15m
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