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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 85 · 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.True or false: a tug of war is a push. (a) False (b) True
  2. 2.Which of these is caused by friction? (a) squeezing a lemon (b) a magnet picks up pins (c) rubbing hands warms them (d) lifting a school bag
  3. 3.True or false: plucking a mango is a push. (a) True (b) False
  4. 4.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) doubled (d) balanced
  5. 5.💪 Which force pulls everything towards the Earth? (a) gravity (b) magnetism (c) friction (d) wind
  6. 6.💪 A cart is pulled to the right with 20 N and to the left with 15 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  7. 7.💪 In a tug of war, one team pulls left with 80 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
  8. 8.True or false: hitting a cricket ball is a pull. (a) True (b) False
  9. 9.True or false: plucking a mango is a pull. (a) False (b) True
  10. 10.💪 A force is a … (a) unit of time (b) kind of colour (c) type of sound (d) push or a pull
  11. 11.Which of these is caused by muscular force? (a) a thrown ball comes down (b) squeezing a lemon (c) an apple falls down (d) rain falls to the ground
  12. 12.💪 Which force is at work: pedalling a cycle? (a) muscular force (b) friction (c) magnetic force (d) gravity
  13. 13.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  14. 14.💪 Which force is at work: an apple falls down? (a) muscular force (b) gravity (c) magnetic force (d) friction
  15. 15.💪 A cart is pulled to the right with 45 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
  16. 16.💪 In which unit do we measure force? (a) litre (L) (b) metre (m) (c) newton (N) (d) second (s)
  17. 17.💪 A cart is pulled to the right with 80 N and to the left with 75 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  18. 18.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) gravity (c) muscular force (d) friction
  19. 19.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  20. 20.💪 Two children push a box to the right, one with 40 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  21. 21.True or false: pressing a doorbell is a pull. (a) True (b) False
  22. 22.💪 In a tug of war, one team pulls left with 100 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
  23. 23.True or false: pressing a doorbell is a push. (a) False (b) True
  24. 24.💪 Which force is at work: a river flows downhill? (a) magnetic force (b) gravity (c) friction (d) muscular force
  25. 25.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 60 N. What is the size of the net force, in newtons?
  26. 26.💪 A bag has a mass of 56 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.Which of these is caused by muscular force? (a) shoes grip the floor (b) lifting a school bag (c) a compass needle turns (d) a rolling ball slows
  28. 28.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  29. 29.💪 Which force is at work: lifting a school bag? (a) friction (b) muscular force (c) gravity (d) magnetic force
  30. 30.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) gravity (c) friction (d) muscular force
  31. 31.💪 A cart is pulled to the right with 70 N and to the left with 60 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  32. 32.True or false: closing a drawer is a pull. (a) True (b) False
  33. 33.True or false: closing a drawer is a push. (a) False (b) True
  34. 34.💪 A box weighs 400 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  35. 35.True or false: pushing a swing is a push. (a) True (b) False
  36. 36.True or false: drawing up a well bucket is a pull. (a) False (b) True
  37. 37.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) magnetic force (c) gravity (d) muscular force
  38. 38.💪 Which force is at work: squeezing a lemon? (a) friction (b) magnetic force (c) gravity (d) muscular force
  39. 39.True or false: pulling a cart is a pull. (a) True (b) False
  40. 40.💪 Which force is at work: a rolling ball slows? (a) muscular force (b) gravity (c) friction (d) magnetic force

Answer key

  1. False
  2. rubbing hands warms them
  3. False
  4. balanced
  5. gravity
  6. to the right
  7. 50
  8. False
  9. True
  10. push or a pull
  11. squeezing a lemon
  12. muscular force
  13. a push
  14. gravity
  15. to the right
  16. newton (N)
  17. to the right
  18. magnetic force
  19. a push
  20. 95
  21. False
  22. 70
  23. True
  24. gravity
  25. 5
  26. 560
  27. lifting a school bag
  28. a pull
  29. muscular force
  30. gravity
  31. to the right
  32. False
  33. True
  34. 40
  35. True
  36. True
  37. magnetic force
  38. muscular force
  39. True
  40. friction

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