A body of mass 2kg initially at rest moves under the action of applied horizontal force of 7N on a table with coefficent of kinetic friction 0.1 calculate work done by the applied force in 10sec. work done by friction in 10sec. work done by the net force on the body in 10sec. change in kinetic energy of the body in 10sec.​

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.