Physics

Problem

A ball is projected vertically upward with a speed of

20\,\text{m/s}

and later returns to the same point of projection. Taking

g = 10\,\text{m/s}^2

, calculate the total time of flight. a)

2\,\text{s}

4.08\,\text{s}

4\,\text{s}

8\,\text{s}