ugh I've got problems with newton again. >.< On vacation, your 1500 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 2.00 m/s^2. What force does the trailer exert on the car? F=ma so: Force of car is 1.08 kN and Force of trailer is 3.0 kN. I thought it would be 1.08-3.0 but I was wrong. What do I need to do?