A ball thrown vertically upwards returns to the thrower in `20` second. Calculate the velocity with which it was thrown and the maximum height attained by the ball. Take `g = 10 m//s^(2)`.

A ball thrown vertically upwards takes 4 seconds to return to the ground. Calculate the velocity with which it is thrown.

A ball thrown up vertically returns to the thrower after 6 s. Find the velocity with which it was thrown up.

A ball trown up vertically returns to the thrower after 10 second. Calculate (i) the velocity with which it was thrown up. (ii) the maximum height it reachesand (iii) its poisition after 7 second.

A ball thrown up vertically returns to the thrower after 6 find a. The velocity with which it was thrown up,

A ball thrown up vertically returns to the thrower after 8 second. Calculate (i) velocity with which it was thrown (ii) maximum height it acquired. (iii) velocity with which it hit the ground.Given g=9.8 m//s^(2) .