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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 64 · 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.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 30 N. What is the size of the net force, in newtons?
  2. 2.💪 A cart is pulled to the right with 85 N and to the left with 100 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  3. 3.💪 A cart is pulled to the right with 35 N and to the left with 50 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  4. 4.💪 A force is a … (a) push or a pull (b) type of sound (c) unit of time (d) kind of colour
  5. 5.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) metre (m) (d) newton (N)
  6. 6.Which of these is caused by gravity? (a) a fridge magnet sticks (b) brakes stop a bicycle (c) a compass needle turns (d) a thrown ball comes down
  7. 7.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced
  8. 8.Which of these is caused by magnetic force? (a) a fridge magnet sticks (b) a rolling ball slows (c) an apple falls down (d) shoes grip the floor
  9. 9.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  10. 10.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) gravity (d) magnetism
  11. 11.💪 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?
  12. 12.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
  13. 13.💪 In a tug of war, one team pulls left with 70 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
  14. 14.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  15. 15.True or false: opening a drawer is a push. (a) True (b) False
  16. 16.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  17. 17.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  18. 18.💪 A bag has a mass of 39 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  19. 19.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 40 N. What is the size of the net force, in newtons?
  20. 20.💪 Which can a force NOT do? (a) start it moving (b) change its shape (c) change its colour (d) stop it moving
  21. 21.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  22. 22.True or false: plucking a mango is a push. (a) True (b) False
  23. 23.Which of these is caused by muscular force? (a) rain falls to the ground (b) a magnet picks up pins (c) squeezing a lemon (d) an apple falls down
  24. 24.💪 A bag has a mass of 12 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  25. 25.True or false: pushing a trolley is a pull. (a) True (b) False
  26. 26.💪 A bag has a mass of 40 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.💪 Which force is at work: a compass needle turns? (a) friction (b) muscular force (c) magnetic force (d) gravity
  28. 28.💪 A cart is pulled to the right with 80 N and to the left with 65 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  29. 29.True or false: pulling a cart is a pull. (a) True (b) False
  30. 30.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  31. 31.💪 Two children push a box to the right, one with 75 N and the other with 80 N. What is the net (total) force on the box, in newtons?
  32. 32.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
  33. 33.💪 Two children push a box to the right, one with 5 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  34. 34.💪 In a tug of war, one team pulls left with 15 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  35. 35.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) magnetic force (c) muscular force (d) gravity
  36. 36.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 40 N. What is the size of the net force, in newtons?
  37. 37.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  38. 38.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  39. 39.💪 Which force is at work: squeezing a lemon? (a) gravity (b) friction (c) muscular force (d) magnetic force
  40. 40.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 60 N. What is the size of the net force, in newtons?

Answer key

  1. 45
  2. to the left
  3. to the left
  4. push or a pull
  5. newton (N)
  6. a thrown ball comes down
  7. balanced
  8. a fridge magnet sticks
  9. a pull
  10. gravity
  11. 115
  12. a pull
  13. 55
  14. a push
  15. False
  16. a pull
  17. a pull
  18. 390
  19. 15
  20. change its colour
  21. a pull
  22. False
  23. squeezing a lemon
  24. 120
  25. False
  26. 400
  27. magnetic force
  28. to the right
  29. True
  30. a push
  31. 155
  32. 25
  33. 80
  34. 10
  35. magnetic force
  36. 10
  37. 25
  38. a push
  39. muscular force
  40. 15

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