Question

A brick falls from a wall to the ground 3.42 m below. How much time will it take to

hit the ground?

Answer 1

0.835 s

Step-by-step explanation:

Answer 2

The time taken by the brick to hit the ground, t = 0.84 s

Step-by-step explanation:

Given that,

A brick falls from a height, h = 3.42 m

The initial velocity of the brick is zero.

Since the brick is under free-falling. The time equation of a free-falling body when the displacement is given is

t =
`√(2h/g)`

where,

h - height from surface in meters

g - acceleration due to gravity

on substituting the values in the above equation,

t =
`√(2X3.14/9.8)`

= 0.84 s

Hence, time taken by the brick to hit the ground is t = 0.84 s