A ball is given a speed v o a rugh horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

A ball is given a speed v on a rough horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

A ball is given a speed v on a rough horizontal surface. The ball travels through a distance l on the surface and stops. A. What are the initial and final kinetic energies of the ball? b. What is the work done by the kinetic friction?

Consider the situation of the previous question from a frame moving with a speed v_0 parallel to the initial velocity of the block? b. What is the work done by the kinetic friction?

Consider the situation of the previous question from a frame moving with a speed v_0 parallel to the initial velocity of the block? b. What is the work done by the kinetic friction?

A spherical ball rolls without slipping on a horizontal surface and its rotational kinetic energy is equal to the translational kinetic enregy.The body is :

If a body has kinetic energy. T, moving on a rough horizontal surface stops at distance y. The frictional force exerted on the body is

If a body has kinetic energy. T, moving on a rough horizontal surface stops at distance y. The frictional force exerted on the body is

A ball moves over a fixed track as shown in the figure. From A and B the ball rolls without slipping. If surface B is frictionless and K_(A),K_(B) and K_(C) are kinetic energies of the ball at A,B and C respectively then: