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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 488 · 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.💪 In a tug of war, one team pulls left with 85 N and the other pulls right with 35 N. What is the size of the net force, in newtons?
  2. 2.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) metre (m) (d) second (s)
  3. 3.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  4. 4.Which of these is caused by gravity? (a) squeezing a lemon (b) a compass needle turns (c) rain falls to the ground (d) a rolling ball slows
  5. 5.💪 Which force is at work: brakes stop a bicycle? (a) gravity (b) magnetic force (c) friction (d) muscular force
  6. 6.💪 Two children push a box to the right, one with 10 N and the other with 45 N. What is the net (total) force on the box, in newtons?
  7. 7.Which of these is caused by muscular force? (a) a magnet picks up pins (b) pedalling a cycle (c) a rolling ball slows (d) brakes stop a bicycle
  8. 8.Which of these is caused by magnetic force? (a) squeezing a lemon (b) a thrown ball comes down (c) a fridge magnet sticks (d) rain falls to the ground
  9. 9.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  10. 10.💪 Which force is at work: squeezing a lemon? (a) muscular force (b) magnetic force (c) friction (d) gravity
  11. 11.True or false: kicking a football is a pull. (a) False (b) True
  12. 12.True or false: closing a drawer is a pull. (a) False (b) True
  13. 13.Which of these is caused by gravity? (a) brakes stop a bicycle (b) a magnet picks up pins (c) an apple falls down (d) squeezing a lemon
  14. 14.💪 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?
  15. 15.💪 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?
  16. 16.💪 A bag has a mass of 7 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  17. 17.Which of these is caused by friction? (a) a compass needle turns (b) a river flows downhill (c) an apple falls down (d) a rolling ball slows
  18. 18.💪 Which force pulls everything towards the Earth? (a) magnetism (b) gravity (c) friction (d) wind
  19. 19.💪 Two children push a box to the right, one with 25 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  20. 20.💪 In a tug of war, one team pulls right with 40 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  21. 21.💪 Which force is at work: lifting a school bag? (a) magnetic force (b) gravity (c) muscular force (d) friction
  22. 22.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  23. 23.True or false: plucking a mango is a push. (a) True (b) False
  24. 24.💪 A box weighs 580 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.True or false: hitting a cricket ball is a pull. (a) True (b) False
  26. 26.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  27. 27.💪 Two children push a box to the right, one with 10 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  28. 28.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  29. 29.💪 A box weighs 510 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  30. 30.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  31. 31.💪 A box weighs 300 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  32. 32.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) friction (c) gravity (d) magnetic force
  33. 33.Which of these is caused by muscular force? (a) a fridge magnet sticks (b) a compass needle turns (c) a river flows downhill (d) lifting a school bag
  34. 34.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  35. 35.💪 A bag has a mass of 46 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  36. 36.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
  37. 37.💪 Two children push a box to the right, one with 25 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  38. 38.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  39. 39.Which of these is caused by friction? (a) shoes grip the floor (b) pedalling a cycle (c) a thrown ball comes down (d) a magnet picks up pins
  40. 40.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) muscular force (c) gravity (d) magnetic force

Answer key

  1. 50
  2. newton (N)
  3. a pull
  4. rain falls to the ground
  5. friction
  6. 55
  7. pedalling a cycle
  8. a fridge magnet sticks
  9. a pull
  10. muscular force
  11. False
  12. False
  13. an apple falls down
  14. 5
  15. 150
  16. 70
  17. a rolling ball slows
  18. gravity
  19. 125
  20. 25
  21. muscular force
  22. a push
  23. False
  24. 58
  25. False
  26. a push
  27. 60
  28. a push
  29. 51
  30. a pull
  31. 30
  32. gravity
  33. lifting a school bag
  34. a push
  35. 460
  36. a pull
  37. 115
  38. a pull
  39. shoes grip the floor
  40. magnetic force

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