A stone is dropped from a building top takes 4 seconds to reach the ground. What is the height of the building

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Solution

The formula is S = ut + ½ at²
the initial velocity (u) = 0, Time(t) = 4, and acceleration due to gravity (a) = 9.8

s = ut + ½ at²
=> s = (04) + ½(9.816)
=> s = 78.4 m

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