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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 163 · 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: pulling a cart is a push. (a) True (b) False
  2. 2.True or false: plucking a mango is a pull. (a) False (b) True
  3. 3.💪 A bag has a mass of 4 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  4. 4.💪 In which unit do we measure force? (a) newton (N) (b) second (s) (c) metre (m) (d) litre (L)
  5. 5.💪 A bag has a mass of 21 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  6. 6.💪 A force is a … (a) push or a pull (b) type of sound (c) unit of time (d) kind of colour
  7. 7.Which of these is caused by muscular force? (a) rubbing hands warms them (b) rain falls to the ground (c) squeezing a lemon (d) a thrown ball comes down
  8. 8.True or false: pushing a swing is a pull. (a) True (b) False
  9. 9.💪 In a tug of war, one team pulls left with 100 N and the other pulls right with 65 N. What is the size of the net force, in newtons?
  10. 10.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  11. 11.💪 In a tug of war, one team pulls left with 60 N and the other pulls right with 40 N. What is the size of the net force, in newtons?
  12. 12.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  13. 13.💪 Two children push a box to the right, one with 15 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  14. 14.💪 In a tug of war, one team pulls right with 60 N and the other pulls left with 30 N. What is the size of the net force, in newtons?
  15. 15.Which of these is caused by friction? (a) an apple falls down (b) rain falls to the ground (c) pedalling a cycle (d) shoes grip the floor
  16. 16.True or false: a tug of war is a push. (a) False (b) True
  17. 17.Which of these is caused by magnetic force? (a) a river flows downhill (b) a compass needle turns (c) brakes stop a bicycle (d) squeezing a lemon
  18. 18.💪 A cart is pulled to the right with 100 N and to the left with 105 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  19. 19.True or false: pressing a doorbell is a pull. (a) True (b) False
  20. 20.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  21. 21.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) gravity (c) muscular force (d) friction
  22. 22.💪 Two children push a box to the right, one with 75 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  23. 23.💪 Two children push a box to the right, one with 70 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  24. 24.💪 A box weighs 250 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 Which force is at work: lifting a school bag? (a) friction (b) gravity (c) magnetic force (d) muscular force
  26. 26.💪 A bag has a mass of 53 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.💪 A bag has a mass of 39 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  28. 28.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) change its colour (d) start it moving
  29. 29.💪 Which force is at work: squeezing a lemon? (a) muscular force (b) magnetic force (c) friction (d) gravity
  30. 30.💪 Two children push a box to the right, one with 15 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  31. 31.Which of these is caused by gravity? (a) a fridge magnet sticks (b) a compass needle turns (c) rubbing hands warms them (d) a thrown ball comes down
  32. 32.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) unbalanced (d) balanced
  33. 33.💪 A cart is pulled to the right with 100 N and to the left with 85 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  34. 34.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  35. 35.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  36. 36.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  37. 37.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) a magnet picks up pins (c) brakes stop a bicycle (d) rain falls to the ground
  38. 38.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) gravity (c) friction (d) muscular force
  39. 39.True or false: pushing a trolley is a pull. (a) True (b) False
  40. 40.Which of these is caused by friction? (a) rubbing hands warms them (b) lifting a school bag (c) a fridge magnet sticks (d) an apple falls down

Answer key

  1. False
  2. True
  3. 40
  4. newton (N)
  5. 210
  6. push or a pull
  7. squeezing a lemon
  8. False
  9. 35
  10. a push
  11. 20
  12. a pull
  13. 85
  14. 30
  15. shoes grip the floor
  16. False
  17. a compass needle turns
  18. to the left
  19. False
  20. a push
  21. magnetic force
  22. 125
  23. 170
  24. 25
  25. muscular force
  26. 530
  27. 390
  28. change its colour
  29. muscular force
  30. 70
  31. a thrown ball comes down
  32. balanced
  33. to the right
  34. a pull
  35. 5
  36. a push
  37. a magnet picks up pins
  38. friction
  39. False
  40. rubbing hands warms them

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