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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 940 · 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.💪 Two children push a box to the right, one with 100 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  2. 2.💪 A cart is pulled to the right with 45 N and to the left with 30 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  3. 3.💪 Which force is at work: brakes stop a bicycle? (a) friction (b) muscular force (c) magnetic force (d) gravity
  4. 4.💪 Two children push a box to the right, one with 85 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  5. 5.💪 In which unit do we measure force? (a) litre (L) (b) newton (N) (c) metre (m) (d) second (s)
  6. 6.💪 A bag has a mass of 13 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  7. 7.💪 Which force is at work: shoes grip the floor? (a) friction (b) gravity (c) magnetic force (d) muscular force
  8. 8.💪 A bag has a mass of 52 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  9. 9.True or false: pushing a swing is a push. (a) True (b) False
  10. 10.💪 In a tug of war, one team pulls right with 95 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
  11. 11.True or false: pulling up your socks is a pull. (a) False (b) True
  12. 12.💪 In a tug of war, one team pulls right with 60 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  13. 13.💪 Which force is at work: pedalling a cycle? (a) friction (b) magnetic force (c) gravity (d) muscular force
  14. 14.💪 A bag has a mass of 60 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  15. 15.💪 Which force is at work: a rolling ball slows? (a) gravity (b) friction (c) muscular force (d) magnetic force
  16. 16.💪 A box weighs 320 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  17. 17.True or false: pushing a swing is a pull. (a) True (b) False
  18. 18.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  19. 19.💪 A box weighs 100 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  20. 20.Which of these is caused by gravity? (a) a fridge magnet sticks (b) brakes stop a bicycle (c) shoes grip the floor (d) rain falls to the ground
  21. 21.💪 Which force is at work: a magnet picks up pins? (a) gravity (b) magnetic force (c) muscular force (d) friction
  22. 22.💪 Which can a force NOT do? (a) stop it moving (b) start it moving (c) change its shape (d) change its colour
  23. 23.True or false: opening a drawer is a pull. (a) True (b) False
  24. 24.Which of these is caused by magnetic force? (a) rain falls to the ground (b) a compass needle turns (c) squeezing a lemon (d) a thrown ball comes down
  25. 25.True or false: kicking a football is a pull. (a) True (b) False
  26. 26.💪 A box weighs 200 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  27. 27.Which of these is caused by friction? (a) an apple falls down (b) a fridge magnet sticks (c) rain falls to the ground (d) rubbing hands warms them
  28. 28.💪 Two children push a box to the right, one with 90 N and the other with 65 N. What is the net (total) force on the box, in newtons?
  29. 29.💪 Two children push a box to the right, one with 100 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  30. 30.True or false: opening a drawer is a push. (a) False (b) True
  31. 31.💪 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
  32. 32.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  33. 33.True or false: drawing up a well bucket is a pull. (a) False (b) True
  34. 34.Which of these is caused by friction? (a) a fridge magnet sticks (b) squeezing a lemon (c) a thrown ball comes down (d) shoes grip the floor
  35. 35.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  36. 36.💪 Which force pulls everything towards the Earth? (a) friction (b) gravity (c) magnetism (d) wind
  37. 37.True or false: kicking a football is a push. (a) False (b) True
  38. 38.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) balanced (d) doubled
  39. 39.Which of these is caused by magnetic force? (a) pedalling a cycle (b) a rolling ball slows (c) a river flows downhill (d) a magnet picks up pins
  40. 40.💪 Two children push a box to the right, one with 90 N and the other with 30 N. What is the net (total) force on the box, in newtons?

Answer key

  1. 195
  2. to the right
  3. friction
  4. 120
  5. newton (N)
  6. 130
  7. friction
  8. 520
  9. True
  10. 75
  11. True
  12. 50
  13. muscular force
  14. 600
  15. friction
  16. 32
  17. False
  18. a push
  19. 10
  20. rain falls to the ground
  21. magnetic force
  22. change its colour
  23. True
  24. a compass needle turns
  25. False
  26. 20
  27. rubbing hands warms them
  28. 155
  29. 140
  30. False
  31. to the right
  32. a pull
  33. True
  34. shoes grip the floor
  35. a push
  36. gravity
  37. True
  38. balanced
  39. a magnet picks up pins
  40. 120

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