Think about when two cars are moving forward and one passes by the other. Why does it appear from the perspective of the faster moving car that theother car is moving backwards? Explain the phenomenon in 3-5 sentences.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final