Two barges, each with a displacement (mass) of 500 mg, are loosely moored in calm water. a stunt driver starts his 1500-kg car from rest at a, drives along the deck, and leaves the end of the 15° ramp at a speed of 50 km/h relative to the barge and ramp. the driver successfully jumps the gap and brings his car to rest relative to barge 2 at b. calculate the velocity v2 imparted to barge 2 just after the car has come to rest on the barge. neglect the resistance of the water to motion at the low veloci- ties involved.