Question

A ball is dropped from a tower of height 30.0 m. If the terminal speed of the ball is 25.0 m/s then calculate the time taken by the ball to hit the ground. (a) 2.67 s (b) 3.58 s (c) 2.47 s (d) 5.54 s

Answer 1

$$30=0.5(9.8)t^2\\t=2.47\ s$$