A stone falling freely from the top of a wall reaches the ground in 1 sec. What is the height of the wall approximately.

Answers (1)
S safeer

Here u=0 since the body is falling freely

The distance travelled in 1 sec is

S=ut+0.5at2

Here the acceleration is the acceleration due to gravity

s=0.5x9.8x12=4.9m

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