A cuboidal elevator cabon is shown in the figure. A ball is thrown from point A on the floor of cabon when the elevator is falling under gravity. The plane of motions is ABCD and the angle of projection of the ball with AB, relative to elevator, if the ball collides with point C, is `alpha`. Then find the value of `tan alpha`.

A ball is thrown from the ground to clear a wall 3m high at a distance of 6m and falls 18m away from the wall, the angle of projection of ball is tan^(-1)(2/x) . Find value of x .

A ball is projected from point A with velocity 20 m/s prependicular to the inclined plane as shown in figure. What is the range of the ball on the inclined plane ?

A body is falling freely under gravity. It passes two points A and B (A being higher than B) 20m apart vertically in 2s. Find the elevation of the point above A from where it began to fall.

A ball thrown down the incline strikes at a point on the incline 25m below the horizontal as shown in the figure. If the ball rises to a maximum height of 20m above the point of projection, the angle of projection alpha (with horizontal x axis) is

A ball is projected from a point on a smooth horizontal floor at an angle theta with the horizontal . Speed of projection is u . Ball collides with the floor several times . Find the total time and horizontal distance covered by the ball .

An open elevator is ascending with constant speed v=10m//s. A ball is thrown vertically up by a boy on the lift when he is at a height h=10m from the ground. The velocity of projection is v=30 m//s with respect to elevator. Find (a) the maximum height attained by the ball. (b) the time taken by the ball to meet the elevator again. (c) time taken by the ball to reach the ground after crossing the elevator.

An open elevator is ascending with constant speed v=10m//s. A ball is thrown vertically up by a boy on the lift when he is at a height h=10m from the ground. The velocity of projection is v=30 m//s with respect to elevator. Find (a) the maximum height attained by the ball. (b) the time taken by the ball to meet the elevator again. (c) time taken by the ball to reach the ground after crossing the elevator.

If an object is thrown at an angle of 60^(@) with horizontal, find elevation angle of the object at its highest point as seen from the point of projection.