a stone is dropped from the edge of a roof. find the distance travelled by the stone in 2 s after the stone was released.

Here,

Initial velocity, u = 0

Acceleration due to gravity is, g = 9.8 m/s2

Using,

S = ut + ½ at2

=> S = 0 + (1/2)(9.8)(22)

=> S = 19.6 m

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