1. Work and Energy Practice Problems

2. Question #1
A person lifts an object to a height of 8 m with a force of 30 N. How much work was done on the object?

3. Question #2
If a 4 kg object is held above the ground at a height of 1 meter, how much energy does it have?
What kind of energy is this?

4. Question #3
In the previous question, how much work was done when lifting an object to that height?

5. Question #4
If the same object was then dropped, how much energy would it have just as it struck the ground below?
What kind of energy is this?

6. Question #5
How much work would the ground do back on the object to stop it? (Same object from #2- #4)

7. Question #6
A 1 kg object is projected straight upward into the air with a speed of 8 m/s. How high will it rise?

8. Question #7
A 10 kg object is released from 16 m above the ground. How fast will it be going after it has fallen halfway?

9. Question #8
In the picture below, at which letter does the ball have the highest PE?

10. Question #9
In the picture below, at which letter does the ball have the highest KE?

11. Question #10
In the picture below, at which letter(s) does the ball have increasing PE and decreasing KE?