Physics Force & Laws Of Motion Level: Misc Level

Two blocks of masses M 1=4.0 kg and M 2= 3.0 kg are placed in contact with each other on a friction-less horizontal surface. A constant horizontal force F =9.0 N is applied to the block of mass m. A. Determine the magnitude of the acceleration of the two -block system. B. Determine the Magnitude of the contact force between the blocks.