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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 470 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.True or false: a tug of war is a push. (a) False (b) True
  2. 2.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 55 N. What is the size of the net force, in newtons?
  3. 3.💪 In which unit do we measure force? (a) metre (m) (b) litre (L) (c) newton (N) (d) second (s)
  4. 4.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  5. 5.💪 Two children push a box to the right, one with 20 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  6. 6.True or false: kicking a football is a pull. (a) True (b) False
  7. 7.Which of these is caused by magnetic force? (a) squeezing a lemon (b) brakes stop a bicycle (c) a compass needle turns (d) lifting a school bag
  8. 8.💪 A box weighs 380 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  9. 9.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  10. 10.💪 Two children push a box to the right, one with 5 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  11. 11.True or false: pulling up your socks is a pull. (a) False (b) True
  12. 12.💪 Which force is at work: lifting a school bag? (a) friction (b) gravity (c) magnetic force (d) muscular force
  13. 13.💪 A bag has a mass of 53 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  14. 14.💪 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?
  15. 15.💪 Which force is at work: a fridge magnet sticks? (a) muscular force (b) magnetic force (c) gravity (d) friction
  16. 16.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  17. 17.💪 Which force is at work: pedalling a cycle? (a) muscular force (b) magnetic force (c) gravity (d) friction
  18. 18.True or false: opening a drawer is a pull. (a) False (b) True
  19. 19.💪 In a tug of war, one team pulls right with 85 N and the other pulls left with 80 N. What is the size of the net force, in newtons?
  20. 20.Which of these is caused by gravity? (a) an apple falls down (b) a magnet picks up pins (c) pedalling a cycle (d) rubbing hands warms them
  21. 21.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  22. 22.💪 Which force pulls everything towards the Earth? (a) gravity (b) wind (c) friction (d) magnetism
  23. 23.Which of these is caused by gravity? (a) a rolling ball slows (b) shoes grip the floor (c) a river flows downhill (d) rubbing hands warms them
  24. 24.True or false: pushing a swing is a push. (a) True (b) False
  25. 25.💪 A box weighs 510 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  26. 26.💪 A bag has a mass of 45 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.💪 Two children push a box to the right, one with 15 N and the other with 25 N. What is the net (total) force on the box, in newtons?
  28. 28.💪 Which force is at work: a magnet picks up pins? (a) friction (b) magnetic force (c) gravity (d) muscular force
  29. 29.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  30. 30.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  31. 31.💪 A bag has a mass of 4 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  32. 32.💪 A force is a … (a) kind of colour (b) type of sound (c) push or a pull (d) unit of time
  33. 33.💪 In a tug of war, one team pulls left with 60 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
  34. 34.💪 Which force is at work: rain falls to the ground? (a) gravity (b) muscular force (c) friction (d) magnetic force
  35. 35.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  36. 36.💪 Which can a force NOT do? (a) change its colour (b) change its shape (c) stop it moving (d) start it moving
  37. 37.💪 A bag has a mass of 36 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  38. 38.💪 A bag has a mass of 52 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  39. 39.💪 Which force is at work: a compass needle turns? (a) gravity (b) friction (c) muscular force (d) magnetic force
  40. 40.💪 A box weighs 90 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?

Answer key

  1. False
  2. 20
  3. newton (N)
  4. a push
  5. 40
  6. False
  7. a compass needle turns
  8. 38
  9. 45
  10. 95
  11. True
  12. muscular force
  13. 530
  14. 10
  15. magnetic force
  16. a push
  17. muscular force
  18. True
  19. 5
  20. an apple falls down
  21. a push
  22. gravity
  23. a river flows downhill
  24. True
  25. 51
  26. 450
  27. 40
  28. magnetic force
  29. 12
  30. 30
  31. 40
  32. push or a pull
  33. 35
  34. gravity
  35. a push
  36. change its colour
  37. 360
  38. 520
  39. magnetic force
  40. 9

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