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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 452 · 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 force is at work: brakes stop a bicycle? (a) gravity (b) magnetic force (c) muscular force (d) friction
  2. 2.💪 In a tug of war, one team pulls right with 80 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  3. 3.True or false: pressing a doorbell is a pull. (a) False (b) True
  4. 4.💪 A bag has a mass of 11 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  5. 5.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 35 N. What is the size of the net force, in newtons?
  6. 6.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) muscular force (c) gravity (d) magnetic force
  7. 7.True or false: pulling a cart is a push. (a) True (b) False
  8. 8.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  9. 9.💪 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?
  10. 10.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  11. 11.💪 Which force is at work: a magnet picks up pins? (a) muscular force (b) magnetic force (c) friction (d) gravity
  12. 12.💪 Two children push a box to the right, one with 30 N and the other with 25 N. What is the net (total) force on the box, in newtons?
  13. 13.True or false: kicking a football is a push. (a) True (b) False
  14. 14.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  15. 15.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  16. 16.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  17. 17.💪 A box weighs 480 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  18. 18.💪 A box weighs 180 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  19. 19.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  20. 20.True or false: closing a drawer is a pull. (a) True (b) False
  21. 21.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) metre (m) (d) newton (N)
  22. 22.Which of these is caused by gravity? (a) a thrown ball comes down (b) a compass needle turns (c) shoes grip the floor (d) a magnet picks up pins
  23. 23.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
  24. 24.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) rain falls to the ground (c) a rolling ball slows (d) a compass needle turns
  25. 25.💪 Which force is at work: an apple falls down? (a) muscular force (b) gravity (c) friction (d) magnetic force
  26. 26.True or false: opening a drawer is a push. (a) False (b) True
  27. 27.💪 A box weighs 240 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  28. 28.💪 In a tug of war, one team pulls right with 100 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
  29. 29.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  30. 30.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  31. 31.True or false: pressing a doorbell is a push. (a) True (b) False
  32. 32.True or false: drawing up a well bucket is a pull. (a) True (b) False
  33. 33.💪 Two children push a box to the right, one with 20 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  34. 34.💪 Two children push a box to the right, one with 70 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  35. 35.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  36. 36.Which of these is caused by friction? (a) brakes stop a bicycle (b) a river flows downhill (c) lifting a school bag (d) squeezing a lemon
  37. 37.💪 A bag has a mass of 15 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  38. 38.True or false: plucking a mango is a push. (a) True (b) False
  39. 39.💪 A cart is pulled to the right with 60 N and to the left with 45 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  40. 40.💪 Is a tug of war a push or a pull? (a) a pull (b) a push

Answer key

  1. friction
  2. 35
  3. False
  4. 110
  5. 30
  6. magnetic force
  7. False
  8. 45
  9. 130
  10. 15
  11. magnetic force
  12. 55
  13. True
  14. a push
  15. a push
  16. a push
  17. 48
  18. 18
  19. a pull
  20. False
  21. newton (N)
  22. a thrown ball comes down
  23. a pull
  24. a compass needle turns
  25. gravity
  26. False
  27. 24
  28. 80
  29. a pull
  30. 5
  31. True
  32. True
  33. 95
  34. 75
  35. a push
  36. brakes stop a bicycle
  37. 150
  38. False
  39. to the right
  40. a pull

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