A ball is thrown vertically upward with a velocity of 20 ms-1 from a top of a multistory building.The hight of the point from where the ball is thrown is 25 m from the ground. The hight to which the ball rises from the ground and time taken before the ball hits the ground are (g:=10 ms-2)
Maxmium height from the ground :20 + 25 = 45m
Time to reach ground
S=-25m, u=20 ms-1, a =-10 m/s2