How long will it take an object dropped from a window to fall a distance of 78.4 meters?

Question

asked Oct 28, 2018 235k views

1 Answer

David Eagen · Answer 1 · 2018-10-31T22:19:40+0000

Answer:

The time is 4 sec.

Explanation:

Given that,

Distance = 78.4 m

We need to calculate the time

Using equation of motion

s=ut+(1)/(2)gt^2

$t =\sqrt{(2s)/(g)}$

Where, s = distance

g = acceleration due to gravity

t = time

$t =\sqrt{(2*78.4)/(9.8)}$

$t=4\ sec$

Hence, The time is 4 sec.