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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 650 · 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: pressing a doorbell is a pull. (a) True (b) False
  2. 2.Which of these is caused by friction? (a) a fridge magnet sticks (b) a magnet picks up pins (c) a thrown ball comes down (d) rubbing hands warms them
  3. 3.💪 Two children push a box to the right, one with 55 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  4. 4.Which of these is caused by friction? (a) a thrown ball comes down (b) a river flows downhill (c) pedalling a cycle (d) a rolling ball slows
  5. 5.💪 In which unit do we measure force? (a) second (s) (b) metre (m) (c) newton (N) (d) litre (L)
  6. 6.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  7. 7.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
  8. 8.💪 A bag has a mass of 50 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  9. 9.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  10. 10.💪 Two children push a box to the right, one with 45 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  11. 11.💪 A bag has a mass of 41 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  12. 12.💪 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?
  13. 13.💪 Which force is at work: shoes grip the floor? (a) muscular force (b) gravity (c) magnetic force (d) friction
  14. 14.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  15. 15.Which of these is caused by magnetic force? (a) a rolling ball slows (b) an apple falls down (c) rubbing hands warms them (d) a compass needle turns
  16. 16.💪 Which can a force NOT do? (a) change its colour (b) change its shape (c) stop it moving (d) start it moving
  17. 17.True or false: hitting a cricket ball is a pull. (a) False (b) True
  18. 18.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  19. 19.💪 A force is a … (a) kind of colour (b) unit of time (c) type of sound (d) push or a pull
  20. 20.💪 In a tug of war, one team pulls right with 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  21. 21.💪 Two children push a box to the right, one with 20 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  22. 22.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  23. 23.💪 Which force is at work: lifting a school bag? (a) friction (b) magnetic force (c) muscular force (d) gravity
  24. 24.Which of these is caused by gravity? (a) a magnet picks up pins (b) an apple falls down (c) a fridge magnet sticks (d) shoes grip the floor
  25. 25.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) gravity (c) friction (d) muscular force
  26. 26.💪 A box weighs 340 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  27. 27.💪 A cart is pulled to the right with 75 N and to the left with 75 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  28. 28.True or false: closing a drawer is a push. (a) True (b) False
  29. 29.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 50 N. What is the size of the net force, in newtons?
  30. 30.💪 Two children push a box to the right, one with 90 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  31. 31.💪 A bag has a mass of 7 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  32. 32.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  33. 33.💪 Which force is at work: pedalling a cycle? (a) gravity (b) magnetic force (c) muscular force (d) friction
  34. 34.💪 Two children push a box to the right, one with 40 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  35. 35.💪 Two children push a box to the right, one with 40 N and the other with 80 N. What is the net (total) force on the box, in newtons?
  36. 36.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  37. 37.True or false: pulling up your socks is a push. (a) False (b) True
  38. 38.💪 Two children push a box to the right, one with 30 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  39. 39.💪 Which force is at work: an apple falls down? (a) magnetic force (b) muscular force (c) friction (d) gravity
  40. 40.💪 Is kicking a football a push or a pull? (a) a push (b) a pull

Answer key

  1. False
  2. rubbing hands warms them
  3. 75
  4. a rolling ball slows
  5. newton (N)
  6. a pull
  7. a pull
  8. 500
  9. a push
  10. 130
  11. 410
  12. 155
  13. friction
  14. a push
  15. a compass needle turns
  16. change its colour
  17. False
  18. 170
  19. push or a pull
  20. 5
  21. 90
  22. 20
  23. muscular force
  24. an apple falls down
  25. magnetic force
  26. 34
  27. no net force
  28. True
  29. 25
  30. 180
  31. 70
  32. a pull
  33. muscular force
  34. 135
  35. 120
  36. a pull
  37. False
  38. 125
  39. gravity
  40. a push

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