A ball is thrown vertically upwards from the ground with a speed of 25.2 ms-1. How long does it take to reach its highest point and how high does it rise? (Take, g = 9.8 ms-2)

Given, upward velocity of ball = 25.2 ms-1Height attained by the ball,                              H=u22g=25.2×25.22×9.8=32.4 mNow, time taken by the ball to attain 32.4 m is                             t=ug=25.29.8=2.57 s