1. The problem statement, all variables and given/known data A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. Rolling friction can be neglected. 2. Relevant equations F=ma acceleration of car = acceleration of truck 3. The attempt at a solution I have determined that both the car and the truck must move at the same acceleration. The car pushes off the ground with 4500N, so that: F = ma 4500 = (1000)a a = 4.5 m/s^2 I attempted to solve for F on the truck: F = ma F = (2000)(4.5) F = 9000 But this is incorrect. Should I be combining the masses so that F = (3000)(4.5)? Or am I just way off here? I am struggling to put together the proper free-body diagram and I think its messing up my understanding of what force is on what object. A push in the right direction is appreciated! Pun intended.