To solve this problem, we will use the equation of motion: v = u + at where: v is the final velocity = 117.72 m/sec u is the initial velocity = zero (body starts falling from rest) a is the acceleration of the body which is equivalent to acceleration due to gravity = 9.8 m/sec^2 t is the time that we want to calculate
Substitute with the givens in the above equation to get the time as follows: v = u + at 117.72 = 0 + 9.8t 117.72 = 9.8t t = 117.72 / 9.8 t = 12.0122 seconds
