- Work is done when an object moves through a distance because of a force acting upon the object.
- When calculating work, you should use the formula: work = force X distance.
- The SI unit for work is the joule. It is represented by the letter J.
A. Sample Problems:
1. Formula: W = F × d
Substitution: W = 200 N × 50 m
Answer with unit of measure: 10,000 J
2. Formula: d = W / F
Substitution: d = 75 J / 5 N
Answer with unit of measure: 15 m
3. Formula: F = W / d
Substitution: F = 125 J / 10 m
Answer with unit of measure: 12.5 N
4. F = W / d = 150 J / 10 m = 15 N
C. Work Problems:
4. W = F × d = 90 N × 5 m = 450 J
5. d = W / F = 72 J / 6 N = 12 m
6. F = W / d = 120 J / 24 m = 5 N
7. W = F × d = 62.6 N × 13 m = 813.8 J
8. d = W / F = 13.2 J / 2 N = 6.6 m
9. F = W / d = 136 J / 27.2 m = 5 N
10. F = W / d = 360 J / 4 m = 90 N
11. W = F × d = 1000 N × 20 m = 20,000 J
12. d = W / F = 68 J / 4 N = 17 m
13. No work is done (0 J) because there is no displacement while holding the sack.
Parent Tip: Review the logic above to help your child master the concept of work force distance worksheet.
