Abrick falls from a wall to the ground 3.42 m below. how much time will it take to
hit the ground?

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

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 =

where,

                                 h - height from surface in meters

                                 g - acceleration due to gravity

on substituting the values in the above equation,

                                 t =  

                                   = 0.84 s

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