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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 78 · 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.Which of these is caused by gravity? (a) an apple falls down (b) brakes stop a bicycle (c) a rolling ball slows (d) shoes grip the floor
  2. 2.💪 A box weighs 320 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  3. 3.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  4. 4.True or false: plucking a mango is a pull. (a) True (b) False
  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.💪 In a tug of war, one team pulls left with 70 N and the other pulls right with 55 N. What is the size of the net force, in newtons?
  7. 7.💪 A cart is pulled to the right with 65 N and to the left with 80 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  8. 8.💪 In which unit do we measure force? (a) litre (L) (b) metre (m) (c) second (s) (d) newton (N)
  9. 9.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) unbalanced (d) balanced
  10. 10.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) gravity (c) friction (d) magnetic force
  11. 11.True or false: drawing up a well bucket is a pull. (a) True (b) False
  12. 12.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  13. 13.💪 Two children push a box to the right, one with 40 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  14. 14.💪 A cart is pulled to the right with 35 N and to the left with 20 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  15. 15.💪 A cart is pulled to the right with 80 N and to the left with 85 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  16. 16.💪 A bag has a mass of 56 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  17. 17.Which of these is caused by magnetic force? (a) a river flows downhill (b) a rolling ball slows (c) a fridge magnet sticks (d) rubbing hands warms them
  18. 18.💪 Two children push a box to the right, one with 90 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  19. 19.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
  20. 20.💪 In a tug of war, one team pulls left with 85 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  21. 21.💪 A bag has a mass of 21 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  22. 22.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
  23. 23.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  24. 24.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) muscular force (c) friction (d) gravity
  25. 25.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
  26. 26.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  27. 27.💪 Which force is at work: squeezing a lemon? (a) muscular force (b) friction (c) gravity (d) magnetic force
  28. 28.💪 Which force is at work: a compass needle turns? (a) muscular force (b) magnetic force (c) friction (d) gravity
  29. 29.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) gravity (d) friction
  30. 30.💪 Which force is at work: rubbing hands warms them? (a) friction (b) muscular force (c) gravity (d) magnetic force
  31. 31.💪 A bag has a mass of 23 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  32. 32.💪 Two children push a box to the right, one with 50 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  33. 33.💪 Which force is at work: shoes grip the floor? (a) magnetic force (b) friction (c) muscular force (d) gravity
  34. 34.💪 Two children push a box to the right, one with 65 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  35. 35.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  36. 36.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  37. 37.True or false: a tug of war is a pull. (a) False (b) True
  38. 38.💪 A bag has a mass of 46 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  39. 39.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  40. 40.💪 A cart is pulled to the right with 90 N and to the left with 80 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left

Answer key

  1. an apple falls down
  2. 32
  3. a pull
  4. True
  5. 510
  6. 15
  7. to the left
  8. newton (N)
  9. balanced
  10. friction
  11. True
  12. a pull
  13. 115
  14. to the right
  15. to the left
  16. 560
  17. a fridge magnet sticks
  18. 130
  19. 10
  20. 80
  21. 210
  22. 65
  23. a push
  24. gravity
  25. push or a pull
  26. a pull
  27. muscular force
  28. magnetic force
  29. gravity
  30. friction
  31. 230
  32. 125
  33. friction
  34. 120
  35. a push
  36. a push
  37. True
  38. 460
  39. a push
  40. to the right

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