A 2.00kg mass and a 3.00kg mass are intially at rest when an explosive impluse separates the two masses with a 40.0N force. The 2.00kg mass acquires a velocity of (-) 4.00 m/s. Determine the time through which the 40.N force is exerted. Determine the velocity of the 3.00 kg object. [please show the solving and the two answer for the two question]