2. A boy drops a stone of mass 200g from a height of 20m. What is the momentum of the
stone when it just hits the floor?
3. A ball is thrown vertically up with an initial velocity of 20 m/s and after some time it
returns. What is the maximum height reached by the ball? Neglect air effect.
4. A ball is thrown horizontally with a velocity of 20m/s from a top of a building 90m high.
Calculate
a) The time taken to reach the ground
b) The horizontal displacement
c) The resultant velocity with which it will strike the ground.
5. A wheel is under a constant angular deceleration of 5rad/s². Its initial speed is 3rad/s. What
angular distance will it travel just before coming to rest?