
A ball is dropped vertically from a height above the ground. It hits the ground and bounces up vertically to a height . Neglecting subsequent motion and air resistance, its velocity varies with the height above the ground as





Important Questions on Kinematics






Two skaters, and are skating towards each other. Skater, throws a ball towards, every such that it always leaves her hand with speed with respect to the ground. Consider two cases: (I) runs with speed towards while remains stationary. (II) runs with speed towards while remains stationary. Note That irrespective of speed of ball always leaves s hand with speed with respect to the ground. Ignore gravity. Balls will be received by










A particle starts from origin from rest and moves with a uniform acceleration along the positive . Identify all figures that correctly represent the motion qualitatively.
( acceleration, velocity, dispalcement, time)


In the cube of side shown in the figure, the vector from the central point of the face to the central point of the face will be:


