For all applicable questions, write the formula(s) used and clearly circle/highlight the final correct answer. Clearly write out ALL steps to the problems, so I can see each step of your work. Failure to show work will result in a zero. Friendly reminders: TE = KE + PE W = TE W = KE + PE

1. If a 7.5 kg object is dropped from a height of 8 m, how much work must be performed on the object to absorb its energy once the object impacts the surface below?

2. An individual is attempting to bench press a 850 N barbell. The individual pushes against the barbell with a force of 925 N for 5 seconds, but is unable to lift the barbell. How much work was performed as the individual pushed against the barbell?

3. A 70 kg student climbs 5 steps of 10 cm each. What is the work performed to climb the steps?

4. How much mechanical work is required to roll a 8.2 kg bowling ball along the ground from a complete stop to a horizontal velocity of 15 m/s?

5. During a deadlift, you lift a 73 kg loaded barbell 0.85 m off the floor. It takes you 2.2 s to complete the lift. How much power did you generate to lift the bar?