A bus takes 2 hours to reach from station A to station B and then 3hours to return from station B to station A. Find the average velocity of the bus.

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.

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

If you let go of the notebook after lifting it, will it move? how?