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A ball is dropped from a height of 80m. The time, in seconds, it takes to reach the ground is:
5 years ago

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bobpursley
neglecting air resistance,
h=1/2 g t^2 or time= sqrt (2*h/g)=sqrt (160/9.8) or about four seconds
5 years ago
DrBob222
distance = 1/2*g*t^2
5 years ago

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