Solve part a b and c

Physics 121 Fall 2025 Document #08: Homework #03 Reading Assignment page 7 of 9 Problem 4: A Simple System Consider a single 9-volt battery with mass 35.2 grams held at a height 2.40 meters above the wood floor. The battery is released at rest and heads for the floor. Assume that air resistance can be neglected. Part (a) Can you use Conservation of Mechanical Energy to determine the speed of the battery just before it hits the floor? If yes, please explain with one or two sentences why you are allowed to do this and then calculate this, showing all of your work. Give your answer symbolically and then numerically. If no, explain exactly why you are not allowed do this. Part (b) Can you use Conservation of Mechanical Energy to determine the speed of the battery just after it first collides and bounces on the floor? If yes, please explain with one or two sentences exactly why you are allowed to do this and then calculate this, showing all of your work. Give your answer symbolically and then numerically. If no, explain exactly why you are not allowed to do this. Part (c) Suppose the battery is allowed bounce once, twice, several times, and then allowed to to rattle and roll around on the floor until it finally comes to rest. Can we you calculate the Total Work done on the battery due to all forces that were applied to it from the point in time when it is released from your hand to the time of corresponding to the battery's final location at rest on the floor? If yes, please explain in one or two sentences exactly why are allowed to do this and then calculate this, showing all of your work. If no, explain exactly why you are not able to do this