Study the speed-time graph of a body given here and answer the following questions: (A) What type of motion is represented by OA?(B) What type of motion is represented by AB?(C) Find out the distance travelled by the body from A to C.

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.