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02-04-2017
Physics

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A ball is dropped and falls with an acceleration of 9.8m/s2 downward. it hit the ground with a velocity of 49 m/s downward. how long did it take the ball to fall to the ground?

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mathssydney mathssydney

02-04-2017

v=u+at
49=0+9.8t
t=49/9.8
t = 5 (seconds)

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