HELPPP PLEASE A person is standing on a skateboard, not moving, and holding a heavy ball. The person then throws the ball behind them, in the direction of the back of the skateboard. What would you expect to happen to the person on the skateboard? Explain, using your knowledge of Newton's third law.

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