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A stone released with zero velocity from the top of atower reaches the ground in 4 seconds. The height ofthe tower is about : (Take g = 10 m/s²)(A) 80 m(B) 80 mm(C) 80 cm(D)None of these |
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Answer» Answer: Explanation: s=ut+1/2(at^2) =1/2(at^2) =80m |
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