In a closed system, a cart with a mass of 1.5 kg is rolling to the right at 1.4 m/s , while another cart of mass 1.0 kg is rolling to the left at the same speed. What is the total momentum of the system of two carts

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.