Answer:
0.8s
Explanation:
Given parameters:
Height of shelf = 3m
Unknown:
Time it will take to hit the ground = ?
Solution:
To solve this problem, we use the expression below;
x = ut + [tex]\frac{1}{2}[/tex] gt²
x is the height
u is the initial velocity = 0m/s
g is the acceleration due to gravity = 9.8m/s²
t is the time taken = ?
Now insert the parameters and solve for t;
3 = (0 x t) +( [tex]\frac{1}{2}[/tex] x 9.8 x t²)
3 = 4.9t²
t² = 0.6
t = 0.8s
