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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 3 - Motion in One Dimension > A ball projected upwards from the foot of a tower. The ball crosses the top of the tower twice after an interval of 6s and the ball reaches the ground after 12s.The height of the tower is (g = 10m/s^2) :

A ball projected upwards from the foot of a tower. The ball crosses the top of the tower twice after an interval of 6s and the ball reaches the ground after 12s.The height of the tower is (g = 10m/s^2) :

Average velocity of a particle moving in a straight line with constant acceleration a and initial velocity u in first t seconds is.