Have an account?
Skip to Content
Build your own quiz
17 questions
Show Answers
See Preview
- 1. Multiple Choice
1) A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what work has she done?
90 J
62.5 J
6.25 J
900 J
- 2. Multiple Choice
2) When 142 J of work is done in pushing a box horizontally 13.3 m, how much force is applied?
10.7 W
18,886 N
10.7 N
1,888.6 N
- 3. Multiple Choice
3) What work is done when a person pushes a refrigerator weighing 720 N across a floor 12 m? (The force of friction between the refrigerator and the floor is 480 N.)
20 J
5,760 J
8,640 J
2,880 J
- 4. Multiple Choice
4) A 5 kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Calculate the acceleration of the object.
0.15625 m/s2
6.4 m/s2
200 m/s2
320 m/s2
- 5. Multiple Choice
5) If a 60 kg person on a 15 kg sled is pushed with a force of 300 N, what will be the total acceleration?
5 m/s2
22,500 m/s2
4 m/s2
0.4 m/s2
- 6. Multiple Choice
6) An object of mass 30 kg is in free fall in a vacuum where there is no air resistance. What is the force on the object if acceleration of gravity on Earth is (g = 9.81 m/s²)?
3.06 N
294.3 N
294.3 N
0.327 N
- 7. Multiple Choice
7) An object of mass 30 kg is in free fall in a vacuum where there is no air resistance. What is the force on the object on Mars?
Hint: Google “acceleration of gravity mars”
111.33 N
8.08 N
0.1237 N
8.08 J
- 8. Multiple Choice
8) How much pressure is the house exerting on the ground?
1,400 P
175 P
350 P
2,800 P
- 9. Multiple Choice
9) A horse performs 15,000 Joules of work pulling a wagon for 20 seconds. What is the horse’s power?
300,000 J
750 W
300,000 W
0.001 W
- 10. Multiple Choice
What is the acceleration of this object?
80 m/s2
2.5 m/s2
5 m/s2
7.5 m/s2
- 11. Multiple Choice
What is the acceleration of this object?
2 m/s2
0.8 m/s2
1.2 m/s2
50 m/s2
- 12. Multiple Choice
What is the acceleration of this object?
8 m/s2
4.5 m/s2
3.5 m/s2
5,600 m/s2
- 13. Multiple Choice
What is the acceleration of the object?
20 m/s2
3.5 m/s2
8.5 m/s2
5 m/s2
- 14. Multiple Choice
How much force is pushed on this object?
4 N
16 N
0.25 N
16 J
- 15. Multiple Choice
How much force is pulled on this object?
10 N
2.5 N
0.4 N
0.4 W
- 16. Multiple Choice
How much force is being used to pull this object?
1 J
64 J
1 N
64 N
- 17. Multiple Choice
How much force is applied on this object?
600 P
66.7 N
600 N
0.015 N
- Answer choicesTagsAnswer choicesTags