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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 157 · 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: pedalling a cycle? (a) muscular force (b) gravity (c) magnetic force (d) friction
  2. 2.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) friction (c) gravity (d) magnetic force
  3. 3.Which of these is caused by friction? (a) a magnet picks up pins (b) rain falls to the ground (c) brakes stop a bicycle (d) pedalling a cycle
  4. 4.💪 A bag has a mass of 18 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  5. 5.True or false: a tug of war is a pull. (a) True (b) False
  6. 6.💪 In a tug of war, one team pulls right with 45 N and the other pulls left with 35 N. What is the size of the net force, in newtons?
  7. 7.💪 Two children push a box to the right, one with 10 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  8. 8.Which of these is caused by muscular force? (a) lifting a school bag (b) a magnet picks up pins (c) shoes grip the floor (d) a compass needle turns
  9. 9.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  10. 10.True or false: closing a drawer is a pull. (a) True (b) False
  11. 11.💪 A force is a … (a) kind of colour (b) push or a pull (c) type of sound (d) unit of time
  12. 12.True or false: a tug of war is a push. (a) True (b) False
  13. 13.💪 A cart is pulled to the right with 75 N and to the left with 65 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  14. 14.💪 Two children push a box to the right, one with 95 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  15. 15.Which of these is caused by muscular force? (a) an apple falls down (b) squeezing a lemon (c) a river flows downhill (d) brakes stop a bicycle
  16. 16.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced
  17. 17.💪 A bag has a mass of 28 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  18. 18.Which of these is caused by magnetic force? (a) a river flows downhill (b) a rolling ball slows (c) a fridge magnet sticks (d) squeezing a lemon
  19. 19.💪 Two children push a box to the right, one with 30 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  20. 20.💪 A bag has a mass of 16 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  21. 21.True or false: drawing up a well bucket is a push. (a) True (b) False
  22. 22.💪 Which can a force NOT do? (a) change its shape (b) start it moving (c) change its colour (d) stop it moving
  23. 23.💪 In a tug of war, one team pulls right with 100 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  24. 24.💪 A box weighs 160 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 A bag has a mass of 12 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  26. 26.💪 Which force is at work: rubbing hands warms them? (a) gravity (b) friction (c) magnetic force (d) muscular force
  27. 27.True or false: kicking a football is a pull. (a) True (b) False
  28. 28.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  29. 29.💪 A bag has a mass of 34 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  30. 30.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  31. 31.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) friction (d) gravity
  32. 32.True or false: opening a drawer is a pull. (a) False (b) True
  33. 33.💪 Which force is at work: squeezing a lemon? (a) magnetic force (b) friction (c) gravity (d) muscular force
  34. 34.💪 Two children push a box to the right, one with 85 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  35. 35.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  36. 36.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  37. 37.💪 A box weighs 440 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  38. 38.💪 Two children push a box to the right, one with 65 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  39. 39.💪 Which force is at work: an apple falls down? (a) friction (b) magnetic force (c) gravity (d) muscular force
  40. 40.💪 A box weighs 130 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?

Answer key

  1. muscular force
  2. gravity
  3. brakes stop a bicycle
  4. 180
  5. True
  6. 10
  7. 40
  8. lifting a school bag
  9. a pull
  10. False
  11. push or a pull
  12. False
  13. to the right
  14. 150
  15. squeezing a lemon
  16. balanced
  17. 280
  18. a fridge magnet sticks
  19. 100
  20. 160
  21. False
  22. change its colour
  23. 95
  24. 16
  25. 120
  26. friction
  27. False
  28. 170
  29. 340
  30. a push
  31. gravity
  32. True
  33. muscular force
  34. 180
  35. a push
  36. a push
  37. 44
  38. 105
  39. gravity
  40. 13

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