Answer:
The time is 0.90 sec.
Explanation:
Given that,
Height = 4.00 m
We need to calculate the time
Using equation of motion
[tex]s = ut-\dfrac{1}{2}(-g)t^2[/tex]
For free fall, u = 0
[tex]t =\sqrt{\dfrac{2s}{g}}[/tex]
Where, s = distance
g = acceleration due to gravity
t = time
Put the value into the formula
[tex]t =\sqrt{\dfrac{2\times4.00}{9.8}}[/tex]
[tex] t= 0.90\ sec[/tex]
Hence, The time is 0.90 sec.