Ok, so I'm doing a lab. A car is attached to a mass by a string. The car sits on an inclined ramp. At the end of the ramp theres a pulley where the hanging mass is hangs from. I collected the following date: the mass of the car is .5 kg the mass of the hanging mass if .055 kg the angle of incline is 3.47 degrees the car's acceleration up the ramp is .587 m/s^2 the length of the ramp up which the car travels is .651 m I want to find the work done on the car using this data. Perhaps I can use W=Fdcosx ? I DON'T KNOW! I need help because when I do m,total*acc*d*cos x , i dont think this is right i calculated the work done on the car another way, by using W=change in potential energy. its change in vertical height up the ramp is .02 m ... so the work would be m,car*g*change in height = -.098J RIGHTT?? but i need to use the other way..