A ball thrown vertically upwards rises to a height of 20 m. Calculate:

(i) the velocity with which the ball is thrown upwards and

(ii) the time taken by the ball to reach the highest point. (g=10 m/ s^{2})

A ball thrown vertically upwards rises to a height of 20 m. Calculate:

(i) the velocity with which the ball is thrown upwards and

(ii) the time taken by the ball to reach the highest point. (g=10 m/ s^{2})