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Grade 8 Work & Power Worksheet with Answers
Grade 8 (US) · Year 9 (UK) · Class 8 (India) · Science
Unit 3: EnergyWork & PowerNGSS MS-PS3-5
Calculating work (W = Fd) and power (P = W/t). This free middle school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comWork & Power
Grade 8 · Science
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Class
Date
Learning goal: Work & Power · NGSS MS-PS3-5
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
A force of 55 N pushes a box 11 m. How much work is done? (W = Fd)
Answer: 605 J
RememberPhysics formulas
- 1
380 J of work is done in 5 s. What is the power? (P = W/t)
- 2
A force of 66 N pushes a box 14 m. How much work is done? (W = Fd)
- 3
1422 J of work is done in 2 s. What is the power? (P = W/t)
- 4
375 J of work is done with a force of 25 N. How far did the object move?
- 5
195 J of work is done with a force of 13 N. How far did the object move?
- 6
1410 J of work is done in 2 s. What is the power? (P = W/t)
- 7
944 J of work is done in 10 s. What is the power? (P = W/t)
- 8
A force of 50 N pushes a box 2 m. How much work is done? (W = Fd)
- 9
A force of 8 N pushes a box 20 m. How much work is done? (W = Fd)
- 10
840 J of work is done with a force of 42 N. How far did the object move?
- 11
873 J of work is done in 4 s. What is the power? (P = W/t)
- 12
684 J of work is done with a force of 57 N. How far did the object move?
★ Challenge corner for fast finishers
Why does your breath make fog on a cold window?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/8/work_power
Answer key — Work & Power (Grade 8)
- 1.76 W
- 2.924 J
- 3.711 W
- 4.15 m
- 5.15 m
- 6.705 W
- 7.94.4 W
- 8.100 J
- 9.160 J
- 10.20 m
- 11.218.25 W
- 12.12 m
- ★water vapor in your breath condenses on the cold glass
Answer key (click to show)
- 1.76 W
- 2.924 J
- 3.711 W
- 4.15 m
- 5.15 m
- 6.705 W
- 7.94.4 W
- 8.100 J
- 9.160 J
- 10.20 m
- 11.218.25 W
- 12.12 m
- ★water vapor in your breath condenses on the cold glass (challenge corner)
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