# A stone is dropped from a cliff. Its speed after it has fallen 100 m is:A. 9.8 ms-1B. 44.2 ms-1C. 19.69 ms-1D. 98 ms-1

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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