Two identical balls are set into motion simultaneously from an equal height `h`. While ball `A` is thrown horizontally with velocity `v`, ball `B` is just released to fall by itself. Choose the alternative that best represents the motion of `A` and `B` with respect to an observer who moves with velocity `v//2` with respect to the ground as shown in the figure.

A ball thrown horizontally with velocity v from the top of a tower of height h reaches the ground in t second.If another ball of double mass is thrown horizontally with velocity 2v from the top of another tower of height 9h then it reaches the ground in time (second)?

Two balls of same mass are released simultaneously from heights h & 2h from the ground level. The balls collide with the floor & stick to it. Then the velocity-time graph of centre of mass of the two balls is best represented by :

A ball is thrown vertically upwards from the top of tower of height h with velocity v . The ball strikes the ground after time.

A truck is moving horizontally with velocity v. A ball thrown vertically upward with a velocity u at angle theta to the horizontal from the truck relative to it. The horizontal range of the ball relative to the ground is

STATEMENT - 1 : Two identical balls B and C lie on a horizontal smooth straight groove so that they are touching. A third identical ball A moves at a speed v along the groove. And collides with B as shown in figure. If the collisions are perfectly elastic, then after the collision, balls A and B will come to rest and ball C moves with velocity v to the right. because STATEMENT - 2 : In an elastic collision, linear momentum and kinetic energy are both conserved.

From the top of a tower, two balls are thrown horizontally with velocities u_(1) and u_(2) in opposite directions. If their velocities are perpendicular to each other just before they strike the ground, find the height of tower.

A ball is dropped from a height h above ground,Neglect the air resistance,its velocity (v) varies with its height y above the ground as

A ball is dropped from a height h above ground. Neglect the air resistance, its velocity (v) varies with its height (y) above the ground as :-