The body falls freely from a height of 5 meters without initial velocity. How long does the body fall?

Given:

h = 5 meters – the height from which the body falls;

g = 10 m / s ^ 2 – acceleration of gravity.

It is required to determine the fall time of the body t (second).

Since, according to the problem statement, the body falls without initial velocity (v0 = 0), then:

h = g * t ^ 2/2, hence:

t = (2 * h / g) ^ 0.5 = (2 * 5/10) ^ 0.5 = (10/10) ^ 0.5 = 1 ^ 0.5 = 1 second.

Answer: the body fell over a period of time equal to 1 second.