Answer:
Metal ball will take 0.364 seconds to reach floor.
Explanation:
Initial height from ground = 65 cm = 0.65 meter
We have equation of motion , [tex]s= ut+\frac{1}{2} at^2[/tex], s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
In this the velocity of body in vertical direction = 0 m/s, acceleration =acceleration due to gravity = 9.8 [tex]m/s^2[/tex], we need to calculate time when s = 0.65 meter.
Substituting
[tex]0.65=0*t+\frac{1}{2} *9.8*t^2\\ \\ t = 0.364 seconds[/tex]
So it will take 0.364 seconds to reach floor.
