Sam noticed every time she rolled a ball on a flat surface it did not stop unless she applied a force on it. this happened multiple times. the outcome never changed. would you classify this as a law or theory? why?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

What occurs during a combustion reaction

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