Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 154 · 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.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) magnetic force (c) gravity (d) friction
2. 2.Which of these is caused by friction? (a) a thrown ball comes down (b) brakes stop a bicycle (c) a compass needle turns (d) a fridge magnet sticks
3. 3.💪 Which force is at work: a rolling ball slows? (a) gravity (b) magnetic force (c) friction (d) muscular force
4. 4.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 65 N. What is the size of the net force, in newtons?
5. 5.True or false: plucking a mango is a pull. (a) True (b) False
6. 6.💪 Which force is at work: pedalling a cycle? (a) friction (b) gravity (c) magnetic force (d) muscular force
7. 7.💪 Which force pulls everything towards the Earth? (a) wind (b) gravity (c) friction (d) magnetism
8. 8.💪 In a tug of war, one team pulls left with 40 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
9. 9.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
10. 10.True or false: a tug of war is a pull. (a) False (b) True
11. 11.💪 Which can a force NOT do? (a) start it moving (b) change its shape (c) change its colour (d) stop it moving
12. 12.💪 A box weighs 570 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
13. 13.💪 A force is a … (a) unit of time (b) push or a pull (c) type of sound (d) kind of colour
14. 14.💪 A bag has a mass of 21 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
15. 15.True or false: hitting a cricket ball is a push. (a) True (b) False
16. 16.💪 In which unit do we measure force? (a) newton (N) (b) metre (m) (c) litre (L) (d) second (s)
17. 17.💪 In a tug of war, one team pulls left with 20 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
18. 18.True or false: drawing up a well bucket is a push. (a) False (b) True
19. 19.💪 Which force is at work: rain falls to the ground? (a) friction (b) magnetic force (c) gravity (d) muscular force
20. 20.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
21. 21.True or false: opening a drawer is a push. (a) False (b) True
22. 22.Which of these is caused by friction? (a) a thrown ball comes down (b) a compass needle turns (c) rubbing hands warms them (d) a river flows downhill
23. 23.💪 Two children push a box to the right, one with 60 N and the other with 35 N. What is the net (total) force on the box, in newtons?
24. 24.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
25. 25.💪 Which force is at work: squeezing a lemon? (a) friction (b) gravity (c) magnetic force (d) muscular force
26. 26.Which of these is caused by magnetic force? (a) rain falls to the ground (b) a fridge magnet sticks (c) rubbing hands warms them (d) shoes grip the floor
27. 27.True or false: plucking a mango is a push. (a) False (b) True
28. 28.Which of these is caused by muscular force? (a) lifting a school bag (b) a rolling ball slows (c) rain falls to the ground (d) shoes grip the floor
29. 29.💪 Two children push a box to the right, one with 15 N and the other with 80 N. What is the net (total) force on the box, in newtons?
30. 30.Which of these is caused by magnetic force? (a) a thrown ball comes down (b) a magnet picks up pins (c) rain falls to the ground (d) pedalling a cycle
31. 31.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
32. 32.💪 Which force is at work: a compass needle turns? (a) friction (b) gravity (c) muscular force (d) magnetic force
33. 33.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
34. 34.💪 Two children push a box to the right, one with 35 N and the other with 65 N. What is the net (total) force on the box, in newtons?
35. 35.True or false: closing a drawer is a pull. (a) False (b) True
36. 36.True or false: kicking a football is a push. (a) True (b) False
37. 37.💪 A bag has a mass of 53 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
38. 38.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 35 N. What is the size of the net force, in newtons?
39. 39.💪 A cart is pulled to the right with 55 N and to the left with 40 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
40. 40.💪 In a tug of war, one team pulls left with 15 N and the other pulls right with 10 N. What is the size of the net force, in newtons?

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