An alpha particle (ma = 6.64 x 10-4 kg) is travelling at 1500 m/s [N] and collides with a proton (mp= 1.67 x 10-27 kg) travelling at 1800 m/s [8]. Determine the final velocities of both particles after this elastic collision.

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

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

Properties seen when one one substance changes to another are known as properties