Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 245 · 40 questions

Engineer's tip (Add same way, subtract opposite): Push moves away, pull moves towards; force is measured in newtons (N). Same direction: add. Opposite directions: bigger − smaller, towards the bigger. Weight (N) ≈ mass (kg) × 10.

1. 1.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
2. 2.💪 A force is a … (a) push or a pull (b) kind of colour (c) unit of time (d) type of sound
3. 3.💪 Which force pulls everything towards the Earth? (a) gravity (b) wind (c) magnetism (d) friction
4. 4.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
5. 5.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) squeezing a lemon (c) a river flows downhill (d) pedalling a cycle
6. 6.Which of these is caused by friction? (a) lifting a school bag (b) an apple falls down (c) rubbing hands warms them (d) a magnet picks up pins
7. 7.💪 In a tug of war, one team pulls right with 45 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
8. 8.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
9. 9.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) magnetic force (d) gravity
10. 10.💪 In which unit do we measure force? (a) newton (N) (b) second (s) (c) metre (m) (d) litre (L)
11. 11.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
12. 12.Which of these is caused by muscular force? (a) a rolling ball slows (b) rain falls to the ground (c) lifting a school bag (d) a magnet picks up pins
13. 13.💪 A cart is pulled to the right with 95 N and to the left with 95 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
14. 14.💪 A box weighs 50 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
15. 15.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
16. 16.💪 Which can a force NOT do? (a) change its colour (b) change its shape (c) start it moving (d) stop it moving
17. 17.💪 Which force is at work: brakes stop a bicycle? (a) gravity (b) magnetic force (c) friction (d) muscular force
18. 18.💪 Which force is at work: pedalling a cycle? (a) gravity (b) friction (c) muscular force (d) magnetic force
19. 19.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
20. 20.💪 In a tug of war, one team pulls left with 80 N and the other pulls right with 65 N. What is the size of the net force, in newtons?
21. 21.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
22. 22.True or false: closing a drawer is a pull. (a) False (b) True
23. 23.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
24. 24.True or false: pulling up your socks is a pull. (a) True (b) False
25. 25.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
26. 26.💪 Two children push a box to the right, one with 90 N and the other with 70 N. What is the net (total) force on the box, in newtons?
27. 27.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
28. 28.💪 A bag has a mass of 22 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
29. 29.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) unbalanced (d) gravity
30. 30.💪 A box weighs 350 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
31. 31.💪 Two children push a box to the right, one with 5 N and the other with 35 N. What is the net (total) force on the box, in newtons?
32. 32.💪 A bag has a mass of 2 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
33. 33.True or false: plucking a mango is a push. (a) True (b) False
34. 34.True or false: pushing a swing is a push. (a) False (b) True
35. 35.💪 A bag has a mass of 39 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
36. 36.💪 Which force is at work: an apple falls down? (a) friction (b) muscular force (c) gravity (d) magnetic force
37. 37.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 70 N. What is the size of the net force, in newtons?
38. 38.💪 A cart is pulled to the right with 30 N and to the left with 40 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
39. 39.Which of these is caused by muscular force? (a) a river flows downhill (b) rubbing hands warms them (c) a rolling ball slows (d) pedalling a cycle
40. 40.True or false: pressing a doorbell is a pull. (a) False (b) True

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