A body was projected vertically upwards from the top of a tower, whose height is
m, at a velocity of m/s. Find the time taken by the body to go back to the
projection point, given that the gravitational acceleration
First, draw a diagram to understand the motion of the particle and pick a positive direction.
List the values with help from the diagram.
Finally, substitute the values into the following formula:
There are two values for time as the particle has a displacement of zero at the start of the journey and after 2.02 seconds. The latter is the correct answer for this question.