Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 302 · 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 of these is caused by gravity? (a) brakes stop a bicycle (b) a magnet picks up pins (c) squeezing a lemon (d) a thrown ball comes down
2. 2.Which of these is caused by magnetic force? (a) an apple falls down (b) rain falls to the ground (c) a compass needle turns (d) a river flows downhill
3. 3.💪 In a tug of war, one team pulls right with 100 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
4. 4.True or false: hitting a cricket ball is a push. (a) False (b) True
5. 5.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) gravity (d) magnetism
6. 6.💪 A bag has a mass of 30 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
7. 7.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
8. 8.💪 Which can a force NOT do? (a) stop it moving (b) start it moving (c) change its shape (d) change its colour
9. 9.Which of these is caused by friction? (a) a rolling ball slows (b) a river flows downhill (c) a fridge magnet sticks (d) a magnet picks up pins
10. 10.Which of these is caused by gravity? (a) a fridge magnet sticks (b) a compass needle turns (c) lifting a school bag (d) rain falls to the ground
11. 11.💪 Two children push a box to the right, one with 35 N and the other with 90 N. What is the net (total) force on the box, in newtons?
12. 12.💪 Two children push a box to the right, one with 65 N and the other with 70 N. What is the net (total) force on the box, in newtons?
13. 13.True or false: hitting a cricket ball is a pull. (a) True (b) False
14. 14.💪 Two children push a box to the right, one with 80 N and the other with 40 N. What is the net (total) force on the box, in newtons?
15. 15.True or false: pressing a doorbell is a push. (a) True (b) False
16. 16.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
17. 17.True or false: pushing a swing is a push. (a) False (b) True
18. 18.True or false: plucking a mango is a pull. (a) True (b) False
19. 19.💪 Which force is at work: brakes stop a bicycle? (a) friction (b) muscular force (c) magnetic force (d) gravity
20. 20.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 45 N. What is the size of the net force, in newtons?
21. 21.Which of these is caused by gravity? (a) a magnet picks up pins (b) a rolling ball slows (c) brakes stop a bicycle (d) an apple falls down
22. 22.Which of these is caused by magnetic force? (a) lifting a school bag (b) a fridge magnet sticks (c) rain falls to the ground (d) rubbing hands warms them
23. 23.True or false: drawing up a well bucket is a push. (a) True (b) False
24. 24.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
25. 25.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
26. 26.Which of these is caused by magnetic force? (a) shoes grip the floor (b) lifting a school bag (c) a magnet picks up pins (d) brakes stop a bicycle
27. 27.💪 A force is a … (a) unit of time (b) kind of colour (c) push or a pull (d) type of sound
28. 28.Which of these is caused by muscular force? (a) rubbing hands warms them (b) squeezing a lemon (c) a rolling ball slows (d) shoes grip the floor
29. 29.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) magnetic force (c) gravity (d) friction
30. 30.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) friction (d) gravity
31. 31.True or false: pulling up your socks is a pull. (a) True (b) False
32. 32.True or false: pulling up your socks is a push. (a) True (b) False
33. 33.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) gravity (c) unbalanced (d) doubled
34. 34.True or false: pressing a doorbell is a pull. (a) True (b) False
35. 35.💪 In a tug of war, one team pulls right with 40 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
36. 36.💪 A box weighs 370 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
37. 37.💪 Two children push a box to the right, one with 45 N and the other with 45 N. What is the net (total) force on the box, in newtons?
38. 38.💪 A cart is pulled to the right with 95 N and to the left with 100 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
39. 39.True or false: pushing a swing is a pull. (a) True (b) False
40. 40.💪 A box weighs 90 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?

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