3. A sphere, mass m, falls to the floor from a height h. The sphere rebounds to its original heighth following a perfectly elastic collision with the floor. During the time the sphere
is in contact with the floor, what is the average force the floor applies to the sphere?

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 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 energy added you so much!