a stone is dropped from the top of a 45 m high building. how fast will it moving when it reaches the ground ? and what will its velocity be?
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Answer:
Explanation:
s = 1/2 a t^2
t = under root of 45 x 2 / 10
t = root of 90 / 10
t = root of 9
t= 3 sec .
velocity = s / t
velocity = 45 / 3
velocity here = 15 m/s
the time it take is approx 3 sec and velocity will be 15 m/s
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The stone hits the ground with a velicity of 29.71m/s
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