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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 266 · 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: a magnet picks up pins? (a) friction (b) muscular force (c) gravity (d) magnetic force
  2. 2.Which of these is caused by muscular force? (a) brakes stop a bicycle (b) a fridge magnet sticks (c) a river flows downhill (d) pedalling a cycle
  3. 3.💪 Which force is at work: an apple falls down? (a) magnetic force (b) friction (c) muscular force (d) gravity
  4. 4.💪 In a tug of war, one team pulls right with 90 N and the other pulls left with 65 N. What is the size of the net force, in newtons?
  5. 5.True or false: pulling up your socks is a push. (a) False (b) True
  6. 6.💪 Two children push a box to the right, one with 5 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  7. 7.True or false: pressing a doorbell is a push. (a) False (b) True
  8. 8.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  9. 9.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) muscular force (c) gravity (d) friction
  10. 10.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  11. 11.True or false: pushing a trolley is a push. (a) False (b) True
  12. 12.Which of these is caused by gravity? (a) a magnet picks up pins (b) rubbing hands warms them (c) an apple falls down (d) a rolling ball slows
  13. 13.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  14. 14.Which of these is caused by gravity? (a) a fridge magnet sticks (b) squeezing a lemon (c) a thrown ball comes down (d) pedalling a cycle
  15. 15.💪 Two children push a box to the right, one with 10 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  16. 16.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) squeezing a lemon (c) shoes grip the floor (d) a rolling ball slows
  17. 17.💪 Two children push a box to the right, one with 80 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  18. 18.💪 In a tug of war, one team pulls right with 100 N and the other pulls left with 85 N. What is the size of the net force, in newtons?
  19. 19.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  20. 20.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced
  21. 21.True or false: drawing up a well bucket is a push. (a) True (b) False
  22. 22.Which of these is caused by gravity? (a) shoes grip the floor (b) a river flows downhill (c) pedalling a cycle (d) brakes stop a bicycle
  23. 23.True or false: hitting a cricket ball is a pull. (a) True (b) False
  24. 24.True or false: kicking a football is a push. (a) False (b) True
  25. 25.💪 In a tug of war, one team pulls left with 10 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  26. 26.💪 Which force is at work: squeezing a lemon? (a) gravity (b) magnetic force (c) friction (d) muscular force
  27. 27.💪 A bag has a mass of 59 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  28. 28.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  29. 29.💪 A box weighs 400 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  30. 30.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  31. 31.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) friction (c) gravity (d) muscular force
  32. 32.💪 Two children push a box to the right, one with 35 N and the other with 45 N. What is the net (total) force on the box, in newtons?
  33. 33.Which of these is caused by friction? (a) rain falls to the ground (b) a river flows downhill (c) a magnet picks up pins (d) a rolling ball slows
  34. 34.Which of these is caused by gravity? (a) rain falls to the ground (b) a compass needle turns (c) a rolling ball slows (d) a fridge magnet sticks
  35. 35.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  36. 36.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  37. 37.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  38. 38.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) magnetism (d) gravity
  39. 39.💪 A bag has a mass of 24 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  40. 40.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push

Answer key

  1. magnetic force
  2. pedalling a cycle
  3. gravity
  4. 25
  5. False
  6. 60
  7. True
  8. a pull
  9. magnetic force
  10. 30
  11. True
  12. an apple falls down
  13. a pull
  14. a thrown ball comes down
  15. 25
  16. a magnet picks up pins
  17. 150
  18. 15
  19. a pull
  20. balanced
  21. False
  22. a river flows downhill
  23. False
  24. True
  25. 5
  26. muscular force
  27. 590
  28. a push
  29. 40
  30. a push
  31. friction
  32. 80
  33. a rolling ball slows
  34. rain falls to the ground
  35. a pull
  36. a pull
  37. a pull
  38. gravity
  39. 240
  40. a push

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