1. The problem statement, all variables and given/known data In April 1974, John Massis of Belgium managed to move two passenger railroad cars. He did so by clamping his teeth down on a bit that was attached to the cars with a rope and then leaning backward while pressing his feet against the railway ties. The cars together weighed 700 kN (about 71 tons). Assume that he pulled with a constant force that was 2.5 times his body weight, at an upward angle θ of 33˚ from the horizontal. His mass was 79 kg, and he moved the cars by 3 m. Neglecting any retarding force from the wheel rotation, find the speed of the cars at the end of the pull. 2. Relevant equations Fnet = Acceleration * Mass ax = Fcos(theta)/ M 3. The attempt at a solution I have absolutely NO idea what to do. The professor didn't go over any problems like this DX Help!!!