Question

a body is dropped from a cliff of a tower what would be time taken to fall 4.9m

Answer 1

s = ut+½at²

4.9 = 0+½gt²

4.9 = ½(9.8)t²

4.9 = 4.9t²

t² = 1

t = 1

Hence, the body will take 1s to fall.

Answer 2

Answer time is 1 sec

Explanation:

According to Newton's second law, s =ut+1/2gt^2

4.9=0+1/2×9.8t^2

t^2= 9.8/9.8=1

t=1sec