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How long in seconds does it take to hit the ground after a ball is dropped from a height of h70 m?
Wiki User
∙ 12y ago
neglecting air resistance,
distance = 1/2 gt^2 where g = acceleration of gravity = 9./8 m/sec/sec
70 = 1/2 (9.8) t^2
14.28 = t^2
t = square root 14.28 = 3.78 seconds
Wiki User
∙ 12y ago
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