Let's go through the
Net Force Worksheet step by step. The goal is to calculate the
net force acting on each object, which is the
vector sum of all forces applied. Since all forces are horizontal (left or right), we can assign:
-
Right → positive (+)
-
Left ← negative (–)
We’ll add the forces algebraically and include direction in the answer.
---
1.
Forces:
- 4 N to the
left → –4 N
- No other forces shown
✔ Net Force = –4 N →
4 N left
✔️ Your answer:
4N left →
✔ Correct
---
2.
Forces:
- 7 N to the
left → –7 N
- 2 N to the
right → +2 N
Net Force = –7 + 2 =
–5 N →
5 N left
✘ You wrote
2N, but that’s incorrect.
✔ Correct Answer: 5 N left
---
3.
Forces:
- 4 N to the
left → –4 N
- 4 N to the
right → +4 N
Net Force = –4 + 4 =
0 N → Balanced
✔️ Your answer:
0N (Balanced) →
✔ Correct
---
4.
Forces:
- 6 N to the
right → +6 N
- 3 N to the
left → –3 N
Net Force = 6 – 3 =
+3 N →
3 N right
✘ You wrote
9N, which is incorrect (you added instead of subtracting).
✔ Correct Answer: 3 N right
---
5.
Forces:
- 8 N to the
left → –8 N
- 4 N to the
right → +4 N
Net Force = –8 + 4 =
–4 N →
4 N left
✔️ Your answer:
4N left →
✔ Correct
---
6.
Forces:
- 4 N to the
right → +4 N
- 5 N to the
left → –5 N
Net Force = 4 – 5 =
–1 N →
1 N left
✔️ Your answer:
1N →
✔ Correct (but make sure you write direction:
1 N left)
---
7.
Forces:
- 3 N to the
left → –3 N
- 3 N to the
right → +3 N
Net Force = –3 + 3 =
0 N → Balanced
✘ You wrote
6N, which is wrong.
✔ Correct Answer: 0 N (Balanced)
---
8.
Forces:
- 2 N to the
left → –2 N
- 4 N to the
right → +4 N
- 5 N to the
right → +5 N
Total Right: 4 + 5 = 9 N
Total Left: 2 N
Net Force = 9 – 2 =
+7 N →
7 N right
✘ You wrote
1N, which is incorrect.
✔ Correct Answer: 7 N right
---
9.
Forces:
- 6 N to the
right → +6 N
- 3 N to the
left → –3 N
Net Force = 6 – 3 =
+3 N →
3 N right
✔️ Your answer:
3N →
✔ Correct (but again, specify direction:
3 N right)
---
10.
Forces:
- 7 N to the
right → +7 N
- 4 N to the
left → –4 N
Net Force = 7 – 4 =
+3 N →
3 N right
✘ You wrote
1N, which is incorrect.
✔ Correct Answer: 3 N right
---
##
✔ Final Correct Answers:
| Problem | Net Force |
|--------|-----------|
| 1 | 4 N left |
| 2 | 5 N left |
| 3 | 0 N (Balanced) |
| 4 | 3 N right |
| 5 | 4 N left |
| 6 | 1 N left |
| 7 | 0 N (Balanced) |
| 8 | 7 N right |
| 9 | 3 N right |
| 10 | 3 N right |
---
📌 Summary of Mistakes:
You made errors in problems
2, 4, 7, 8, and 10 — likely due to:
- Adding instead of subtracting opposing forces
- Misjudging directions
- Not considering vector nature (direction matters!)
💡
Tip: Always:
1. Assign signs: right = +, left = –
2. Add all forces algebraically
3. Include direction in your final answer
Let me know if you'd like a visual explanation or help with drawing force diagrams!
Parent Tip: Review the logic above to help your child master the concept of net force worksheet with answers.
