Q15 of 61 Page 318

A stone is dropped from a cliff. Its speed after it has fallen 100 m is:

The stone is dropped from the cliff. So,


Initial Speed = u = 0


Distance = s = 100 m


Final Speed = v


Acceleration = a = g = 9.8 ms-2


Now,





v = 44.27 ms-1


Hence, option B is correct.

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