A 5kg stone falls from a height of 1000m and penetrates 2m in a layer of sand. The time of penetration is
A)14.285 s
B)0.0285 s
C)7.146 s
D)0.285 s
A)14.285 s
B)0.0285 s
C)7.146 s
D)0.285 s
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Please yaar someone answer!
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