Question

the child drops a stone of 1kg from the top of a tower . find its kinetic energy at 5 second after it start falling​

Answer 1

Explanation:

velocity gained by it 5 sec(v) = u+ g×t = 0+ 10×5 = 50m/s

K.E. of the stone = 1/2 × m v²

= 1/2 × 1 × 50² = 1250 J

Answer 2

1250J

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