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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 135 · 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 25 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
  2. 2.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  3. 3.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  4. 4.💪 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?
  5. 5.💪 Which force is at work: squeezing a lemon? (a) muscular force (b) friction (c) magnetic force (d) gravity
  6. 6.💪 A cart is pulled to the right with 100 N and to the left with 95 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  7. 7.💪 In which unit do we measure force? (a) newton (N) (b) metre (m) (c) second (s) (d) litre (L)
  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 push. (a) True (b) False
  10. 10.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  11. 11.💪 A box weighs 480 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  12. 12.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  13. 13.💪 A cart is pulled to the right with 95 N and to the left with 110 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  14. 14.💪 A cart is pulled to the right with 20 N and to the left with 30 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  15. 15.💪 Which force is at work: lifting a school bag? (a) gravity (b) friction (c) magnetic force (d) muscular force
  16. 16.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) brakes stop a bicycle (c) squeezing a lemon (d) rain falls to the ground
  17. 17.Which of these is caused by friction? (a) a thrown ball comes down (b) a rolling ball slows (c) lifting a school bag (d) a river flows downhill
  18. 18.💪 Which force is at work: a magnet picks up pins? (a) friction (b) muscular force (c) gravity (d) magnetic force
  19. 19.💪 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 left (c) to the right
  20. 20.💪 A bag has a mass of 42 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  21. 21.💪 Which force is at work: a compass needle turns? (a) friction (b) gravity (c) muscular force (d) magnetic force
  22. 22.💪 Which can a force NOT do? (a) stop it moving (b) change its colour (c) change its shape (d) start it moving
  23. 23.True or false: pressing a doorbell is a push. (a) True (b) False
  24. 24.💪 A cart is pulled to the right with 75 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
  25. 25.💪 In a tug of war, one team pulls right with 15 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  26. 26.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  27. 27.True or false: a tug of war is a push. (a) False (b) True
  28. 28.True or false: hitting a cricket ball is a push. (a) True (b) False
  29. 29.True or false: pulling a cart is a push. (a) True (b) False
  30. 30.💪 Two children push a box to the right, one with 45 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  31. 31.True or false: pushing a swing is a pull. (a) True (b) False
  32. 32.Which of these is caused by magnetic force? (a) a compass needle turns (b) a thrown ball comes down (c) a river flows downhill (d) an apple falls down
  33. 33.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) gravity (c) unbalanced (d) doubled
  34. 34.💪 Which force is at work: a river flows downhill? (a) friction (b) muscular force (c) gravity (d) magnetic force
  35. 35.💪 Two children push a box to the right, one with 50 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  36. 36.💪 A box weighs 50 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  37. 37.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  38. 38.Which of these is caused by muscular force? (a) lifting a school bag (b) a compass needle turns (c) a rolling ball slows (d) a fridge magnet sticks
  39. 39.💪 Which force is at work: a rolling ball slows? (a) muscular force (b) magnetic force (c) gravity (d) friction
  40. 40.💪 Which force is at work: pedalling a cycle? (a) friction (b) gravity (c) magnetic force (d) muscular force

Answer key

  1. 5
  2. a pull
  3. a push
  4. 45
  5. muscular force
  6. to the right
  7. newton (N)
  8. False
  9. False
  10. a push
  11. 48
  12. a pull
  13. to the left
  14. to the left
  15. muscular force
  16. a magnet picks up pins
  17. a rolling ball slows
  18. magnetic force
  19. to the right
  20. 420
  21. magnetic force
  22. change its colour
  23. True
  24. to the right
  25. 5
  26. a pull
  27. False
  28. True
  29. False
  30. 60
  31. False
  32. a compass needle turns
  33. balanced
  34. gravity
  35. 100
  36. 5
  37. 25
  38. lifting a school bag
  39. friction
  40. muscular force

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