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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 395 · 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.💪 A bag has a mass of 3 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  2. 2.💪 A cart is pulled to the right with 75 N and to the left with 85 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  3. 3.True or false: a tug of war is a push. (a) False (b) True
  4. 4.💪 A box weighs 540 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  5. 5.💪 A box weighs 490 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  6. 6.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  7. 7.💪 In a tug of war, one team pulls right with 95 N and the other pulls left with 75 N. What is the size of the net force, in newtons?
  8. 8.💪 A force is a … (a) unit of time (b) type of sound (c) kind of colour (d) push or a pull
  9. 9.True or false: opening a drawer is a pull. (a) False (b) True
  10. 10.True or false: pulling up your socks is a push. (a) False (b) True
  11. 11.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  12. 12.True or false: drawing up a well bucket is a push. (a) False (b) True
  13. 13.💪 Which can a force NOT do? (a) change its colour (b) start it moving (c) stop it moving (d) change its shape
  14. 14.💪 Which force is at work: a river flows downhill? (a) gravity (b) magnetic force (c) friction (d) muscular force
  15. 15.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  16. 16.True or false: pulling a cart is a push. (a) True (b) False
  17. 17.💪 Which force is at work: rain falls to the ground? (a) gravity (b) friction (c) magnetic force (d) muscular force
  18. 18.True or false: pushing a trolley is a push. (a) False (b) True
  19. 19.💪 Which force pulls everything towards the Earth? (a) magnetism (b) friction (c) wind (d) gravity
  20. 20.True or false: plucking a mango is a pull. (a) True (b) False
  21. 21.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  22. 22.💪 Two children push a box to the right, one with 65 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  23. 23.💪 In a tug of war, one team pulls left with 10 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  24. 24.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.True or false: pulling a cart is a pull. (a) True (b) False
  26. 26.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  27. 27.💪 Two children push a box to the right, one with 30 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  28. 28.Which of these is caused by gravity? (a) a compass needle turns (b) brakes stop a bicycle (c) a thrown ball comes down (d) rubbing hands warms them
  29. 29.💪 Which force is at work: brakes stop a bicycle? (a) magnetic force (b) gravity (c) friction (d) muscular force
  30. 30.💪 Which force is at work: lifting a school bag? (a) friction (b) muscular force (c) gravity (d) magnetic force
  31. 31.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) second (s) (d) metre (m)
  32. 32.True or false: hitting a cricket ball is a push. (a) False (b) True
  33. 33.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  34. 34.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  35. 35.💪 Which force is at work: an apple falls down? (a) gravity (b) muscular force (c) friction (d) magnetic force
  36. 36.True or false: pressing a doorbell is a pull. (a) True (b) False
  37. 37.💪 Two children push a box to the right, one with 25 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  38. 38.Which of these is caused by gravity? (a) squeezing a lemon (b) brakes stop a bicycle (c) a magnet picks up pins (d) an apple falls down
  39. 39.True or false: closing a drawer is a pull. (a) True (b) False
  40. 40.Which of these is caused by muscular force? (a) a rolling ball slows (b) pedalling a cycle (c) a fridge magnet sticks (d) a magnet picks up pins

Answer key

  1. 30
  2. to the left
  3. False
  4. 54
  5. 49
  6. a push
  7. 20
  8. push or a pull
  9. True
  10. False
  11. a pull
  12. False
  13. change its colour
  14. gravity
  15. 12
  16. False
  17. gravity
  18. True
  19. gravity
  20. True
  21. a push
  22. 85
  23. 5
  24. 41
  25. True
  26. a push
  27. 100
  28. a thrown ball comes down
  29. friction
  30. muscular force
  31. newton (N)
  32. True
  33. 170
  34. a pull
  35. gravity
  36. False
  37. 55
  38. an apple falls down
  39. False
  40. pedalling a cycle

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