Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 781 · 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.💪 A bag has a mass of 51 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
2. 2.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
3. 3.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
4. 4.💪 Which force pulls everything towards the Earth? (a) wind (b) magnetism (c) friction (d) gravity
5. 5.💪 Which force is at work: a river flows downhill? (a) muscular force (b) gravity (c) friction (d) magnetic force
6. 6.💪 Which force is at work: rubbing hands warms them? (a) friction (b) muscular force (c) magnetic force (d) gravity
7. 7.💪 A force is a … (a) kind of colour (b) unit of time (c) push or a pull (d) type of sound
8. 8.True or false: a tug of war is a pull. (a) True (b) False
9. 9.True or false: kicking a football is a push. (a) True (b) False
10. 10.💪 Which force is at work: pedalling a cycle? (a) gravity (b) muscular force (c) magnetic force (d) friction
11. 11.💪 A box weighs 70 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
12. 12.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) unbalanced (d) gravity
13. 13.💪 Which force is at work: a compass needle turns? (a) muscular force (b) magnetic force (c) friction (d) gravity
14. 14.💪 In a tug of war, one team pulls right with 90 N and the other pulls left with 80 N. What is the size of the net force, in newtons?
15. 15.💪 In a tug of war, one team pulls right with 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
16. 16.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
17. 17.Which of these is caused by friction? (a) squeezing a lemon (b) a thrown ball comes down (c) an apple falls down (d) brakes stop a bicycle
18. 18.💪 A bag has a mass of 29 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
19. 19.💪 A bag has a mass of 4 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
20. 20.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
21. 21.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
22. 22.True or false: pulling a cart is a push. (a) True (b) False
23. 23.💪 A box weighs 90 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
24. 24.💪 A bag has a mass of 43 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
25. 25.💪 A cart is pulled to the right with 35 N and to the left with 30 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
26. 26.Which of these is caused by friction? (a) a fridge magnet sticks (b) a thrown ball comes down (c) shoes grip the floor (d) a magnet picks up pins
27. 27.True or false: closing a drawer is a push. (a) False (b) True
28. 28.Which of these is caused by gravity? (a) a rolling ball slows (b) brakes stop a bicycle (c) pedalling a cycle (d) a river flows downhill
29. 29.Which of these is caused by muscular force? (a) pedalling a cycle (b) a river flows downhill (c) a magnet picks up pins (d) a fridge magnet sticks
30. 30.💪 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?
31. 31.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
32. 32.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
33. 33.💪 Two children push a box to the right, one with 5 N and the other with 60 N. What is the net (total) force on the box, in newtons?
34. 34.💪 In a tug of war, one team pulls right with 95 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
35. 35.True or false: drawing up a well bucket is a push. (a) False (b) True
36. 36.💪 Which force is at work: a thrown ball comes down? (a) gravity (b) muscular force (c) friction (d) magnetic force
37. 37.💪 Two children push a box to the right, one with 45 N and the other with 55 N. What is the net (total) force on the box, in newtons?
38. 38.💪 A box weighs 440 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
39. 39.Which of these is caused by magnetic force? (a) lifting a school bag (b) brakes stop a bicycle (c) a fridge magnet sticks (d) squeezing a lemon
40. 40.💪 Which force is at work: lifting a school bag? (a) gravity (b) magnetic force (c) muscular force (d) friction

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