Question 938078
A ball is dropped from a height of 60 meters above the ground. How long does it take to hit the ground?
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s = at^2/2 = 60
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Using 5 m/sec/sec for acceleration,
5t^2 = 60
t = sqrt(12) =~ 3.464 seconds
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Some use 4.9 m/sec/sec for acceleration, some use other numbers.