Question

A brick is dropped from rest from a height of 4.9 m. How long does it take for the brick to

reach the ground?

Answer 1

t=1s

Step-by-step explanation:

Using the formula

s=ut+1/2at^2

4.9 = (0)(t) + 1/2(9.8)(t^2)

4.9 = 4.9(t^2)

t^2 = 1

t = 1