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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 622 · 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.💪 Two children push a box to the right, one with 5 N and the other with 10 N. What is the net (total) force on the box, in newtons?
  2. 2.Which of these is caused by gravity? (a) a rolling ball slows (b) shoes grip the floor (c) a river flows downhill (d) squeezing a lemon
  3. 3.💪 Two children push a box to the right, one with 30 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  4. 4.💪 Two children push a box to the right, one with 85 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  5. 5.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 60 N. What is the size of the net force, in newtons?
  6. 6.💪 Which force is at work: a fridge magnet sticks? (a) magnetic force (b) gravity (c) friction (d) muscular force
  7. 7.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  8. 8.True or false: pulling up your socks is a push. (a) True (b) False
  9. 9.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  10. 10.💪 In a tug of war, one team pulls right with 45 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  11. 11.True or false: pushing a swing is a push. (a) False (b) True
  12. 12.💪 Two children push a box to the right, one with 85 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  13. 13.💪 Which force pulls everything towards the Earth? (a) magnetism (b) gravity (c) friction (d) wind
  14. 14.💪 A cart is pulled to the right with 40 N and to the left with 30 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  15. 15.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  16. 16.💪 A cart is pulled to the right with 60 N and to the left with 75 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  17. 17.💪 A force is a … (a) type of sound (b) push or a pull (c) kind of colour (d) unit of time
  18. 18.💪 A box weighs 440 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  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.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  21. 21.💪 A box weighs 590 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  22. 22.True or false: pushing a swing is a pull. (a) False (b) True
  23. 23.True or false: plucking a mango is a push. (a) False (b) True
  24. 24.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  25. 25.💪 A box weighs 70 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  26. 26.💪 Which force is at work: shoes grip the floor? (a) gravity (b) magnetic force (c) friction (d) muscular force
  27. 27.True or false: plucking a mango is a pull. (a) True (b) False
  28. 28.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) pedalling a cycle (c) a magnet picks up pins (d) an apple falls down
  29. 29.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  30. 30.True or false: pressing a doorbell is a pull. (a) False (b) True
  31. 31.True or false: pushing a trolley is a push. (a) True (b) False
  32. 32.True or false: hitting a cricket ball is a pull. (a) True (b) False
  33. 33.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  34. 34.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) muscular force (c) gravity (d) friction
  35. 35.Which of these is caused by muscular force? (a) rain falls to the ground (b) a rolling ball slows (c) a compass needle turns (d) pedalling a cycle
  36. 36.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) gravity (c) magnetic force (d) friction
  37. 37.💪 Which force is at work: a compass needle turns? (a) friction (b) gravity (c) magnetic force (d) muscular force
  38. 38.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) gravity (c) friction (d) muscular force
  39. 39.💪 A bag has a mass of 9 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  40. 40.💪 A bag has a mass of 20 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?

Answer key

  1. 15
  2. a river flows downhill
  3. 60
  4. 135
  5. 15
  6. magnetic force
  7. a pull
  8. False
  9. a push
  10. 30
  11. True
  12. 105
  13. gravity
  14. to the right
  15. a pull
  16. to the left
  17. push or a pull
  18. 44
  19. 570
  20. a push
  21. 59
  22. False
  23. False
  24. a pull
  25. 7
  26. friction
  27. True
  28. a magnet picks up pins
  29. 60
  30. False
  31. True
  32. False
  33. a push
  34. muscular force
  35. pedalling a cycle
  36. gravity
  37. magnetic force
  38. gravity
  39. 90
  40. 200

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