Question

048)
48. A stone is dropped from a bridge 45 m above water. Time it takes to strike water is
(g = 10 m/sec)
Your answer​

Answer 1

Given:- Height is 45m, g is 10m/s^2 initial velocity = 0 (because the stone is dropped and not thrown)

Solution:-
We know S = ut + 1/2 (g)(t^2)
45 = 0t + 1/2 (10) t^2
45 = 5t^2
t^2 = 9
t = +- 3
and time cannot be negative, t=3sec
Therefore the stone takes 3 seconds to reach the water.

Thank you
Hope you like it and don’t forget to mark me the brainliest