A light ball falling on ground, after striking the ground rises upwards. Explain the reason.

A ball rolling on the ground possesses

How does lightning strike the ground?

A ball of mass 20 g falls from a height of 10 m and after striking the ground.It rebounds from the ground to a height of 8 m . (a) Calculate: (i)The kinetic energy of the ball just before striking the ground ,and (ii)The loss in kinetic energy of the ball on striking the ground,and (ii)the loss in kinetic energy of the ball on striking the ground. (b)What happens to the loss in kinetic energy in part(ii) ? Take g=10 m s^(-2) Neglect air friction .

A steel ball is dropped from th roof of a building. A man standing in front of a 1-m high window in the building notes tha the ball takes 0.1 s to the fall from the top to the boottom of the window. The ball continues to fall and strikes the ground. On striking the ground, the ball gers rebounded with the same speed with which it hits the ground. If the ball reappears at the bottom of the window 2 s after passing the bottom of the window on the way down, dind the height of the building.

A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back ? (g = 10m//s^2)

A particle is thrown vertically upward with a speed u from the top of a tower of height h from ground level, If after first impact with ground it just reaches to height h from ground the coeffecient of restitution for the collision is :-

Joe throws a ball upwards from a height of 12 feet from ground level. The height of the ball above the ground after time t second from when the ball was thrown is given by the expression h(t)= -t^(2)+at+b . The ball comes back to the ground after 8 second. What is the value of (a+b)?

A man in a balloon, rising vertically with an acceleration of 5 m//s^(2) , releases a ball 10 s after the balloon is let go from the ground. The greatest height above the ground reached by the ball is

Joe throws a ball upwards from a certain height above the ground level. The height of the ball above the ground after time t seconds from when the ball was thrown is given by the expression h(t)= -(t-a)^(2)+b . The ball reaches a maximum height of 25 feet after 4 seconds. After how much time [in seconds] will the ball reach the ground level?

An object is projected horizontally from a top of the tower of height h. The line joining the point of projection and point of striking on the ground makes an angle 45^@ with ground, then with what velocity the object strikes the ground