car of mass 831 kg is parked behind a small truck of mass 1553 kg on a level road. The brakes of both the car and the truck are off so that they are free to roll with negligible friction. A 86 kg woman sitting on the tailgate of the truck shoves the car away by exerting a constant force on the car with her feet. The car accelerates at 0.2 m/s2. What is the acceleration of the truck? What is the magnitude of the force exerted on the car?