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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 889 · 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.

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  1. 1.💪 A bag has a mass of 10 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  2. 2.True or false: pressing a doorbell is a push. (a) False (b) True
  3. 3.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  4. 4.💪 A bag has a mass of 21 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  5. 5.💪 A bag has a mass of 51 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  6. 6.True or false: closing a drawer is a pull. (a) False (b) True
  7. 7.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  8. 8.💪 A box weighs 440 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  9. 9.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  10. 10.💪 A cart is pulled to the right with 40 N and to the left with 55 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  11. 11.💪 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?
  12. 12.💪 Which force is at work: a rolling ball slows? (a) gravity (b) magnetic force (c) muscular force (d) friction
  13. 13.Which of these is caused by friction? (a) a rolling ball slows (b) lifting a school bag (c) a thrown ball comes down (d) rain falls to the ground
  14. 14.Which of these is caused by friction? (a) lifting a school bag (b) an apple falls down (c) brakes stop a bicycle (d) a river flows downhill
  15. 15.💪 Two children push a box to the right, one with 100 N and the other with 10 N. What is the net (total) force on the box, in newtons?
  16. 16.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) gravity (d) magnetism
  17. 17.True or false: opening a drawer is a push. (a) False (b) True
  18. 18.💪 Two children push a box to the right, one with 35 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  19. 19.💪 A bag has a mass of 57 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  20. 20.💪 A force is a … (a) push or a pull (b) kind of colour (c) unit of time (d) type of sound
  21. 21.💪 A box weighs 30 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  22. 22.💪 Which force is at work: a magnet picks up pins? (a) magnetic force (b) muscular force (c) friction (d) gravity
  23. 23.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  24. 24.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) doubled (c) gravity (d) unbalanced
  25. 25.💪 Two children push a box to the right, one with 5 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  26. 26.💪 Which force is at work: an apple falls down? (a) gravity (b) muscular force (c) friction (d) magnetic force
  27. 27.Which of these is caused by friction? (a) squeezing a lemon (b) a magnet picks up pins (c) rain falls to the ground (d) shoes grip the floor
  28. 28.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) gravity (c) friction (d) muscular force
  29. 29.Which of these is caused by magnetic force? (a) pedalling a cycle (b) rubbing hands warms them (c) a fridge magnet sticks (d) squeezing a lemon
  30. 30.💪 Two children push a box to the right, one with 60 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  31. 31.💪 A box weighs 150 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  32. 32.💪 A box weighs 210 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  33. 33.True or false: drawing up a well bucket is a pull. (a) True (b) False
  34. 34.💪 Which force is at work: a compass needle turns? (a) gravity (b) friction (c) muscular force (d) magnetic force
  35. 35.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  36. 36.True or false: hitting a cricket ball is a push. (a) True (b) False
  37. 37.💪 Which force is at work: brakes stop a bicycle? (a) gravity (b) magnetic force (c) muscular force (d) friction
  38. 38.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) friction (c) gravity (d) muscular force
  39. 39.True or false: a tug of war is a push. (a) True (b) False
  40. 40.💪 A bag has a mass of 25 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?

Answer key

  1. 100
  2. True
  3. a pull
  4. 210
  5. 510
  6. False
  7. 20
  8. 44
  9. a push
  10. to the left
  11. 100
  12. friction
  13. a rolling ball slows
  14. brakes stop a bicycle
  15. 110
  16. gravity
  17. False
  18. 65
  19. 570
  20. push or a pull
  21. 3
  22. magnetic force
  23. a pull
  24. balanced
  25. 60
  26. gravity
  27. shoes grip the floor
  28. gravity
  29. a fridge magnet sticks
  30. 155
  31. 15
  32. 21
  33. True
  34. magnetic force
  35. a push
  36. True
  37. friction
  38. muscular force
  39. False
  40. 250

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