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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 963 · 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 right with 50 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  2. 2.💪 A cart is pulled to the right with 65 N and to the left with 80 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  3. 3.💪 In which unit do we measure force? (a) litre (L) (b) second (s) (c) newton (N) (d) metre (m)
  4. 4.Which of these is caused by muscular force? (a) a river flows downhill (b) brakes stop a bicycle (c) squeezing a lemon (d) a rolling ball slows
  5. 5.True or false: pushing a swing is a pull. (a) True (b) False
  6. 6.💪 A bag has a mass of 42 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  7. 7.Which of these is caused by friction? (a) a thrown ball comes down (b) rain falls to the ground (c) an apple falls down (d) a rolling ball slows
  8. 8.💪 In a tug of war, one team pulls left with 15 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  9. 9.Which of these is caused by gravity? (a) a rolling ball slows (b) pedalling a cycle (c) lifting a school bag (d) a thrown ball comes down
  10. 10.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  11. 11.💪 Which force is at work: rubbing hands warms them? (a) friction (b) magnetic force (c) muscular force (d) gravity
  12. 12.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  13. 13.True or false: pressing a doorbell is a push. (a) False (b) True
  14. 14.True or false: closing a drawer is a push. (a) False (b) True
  15. 15.💪 Which force is at work: brakes stop a bicycle? (a) magnetic force (b) friction (c) gravity (d) muscular force
  16. 16.💪 Two children push a box to the right, one with 35 N and the other with 65 N. What is the net (total) force on the box, in newtons?
  17. 17.True or false: plucking a mango is a push. (a) False (b) True
  18. 18.💪 Which force is at work: a river flows downhill? (a) gravity (b) magnetic force (c) muscular force (d) friction
  19. 19.💪 A cart is pulled to the right with 20 N and to the left with 25 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  20. 20.True or false: hitting a cricket ball is a pull. (a) False (b) True
  21. 21.Which of these is caused by friction? (a) a thrown ball comes down (b) brakes stop a bicycle (c) a compass needle turns (d) rain falls to the ground
  22. 22.💪 A box weighs 130 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  23. 23.💪 A box weighs 510 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  24. 24.Which of these is caused by muscular force? (a) a fridge magnet sticks (b) rain falls to the ground (c) a river flows downhill (d) pedalling a cycle
  25. 25.Which of these is caused by gravity? (a) brakes stop a bicycle (b) a river flows downhill (c) a rolling ball slows (d) squeezing a lemon
  26. 26.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  27. 27.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  28. 28.💪 Which force is at work: an apple falls down? (a) magnetic force (b) friction (c) gravity (d) muscular force
  29. 29.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  30. 30.💪 Which force is at work: shoes grip the floor? (a) magnetic force (b) muscular force (c) friction (d) gravity
  31. 31.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  32. 32.💪 In a tug of war, one team pulls right with 95 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
  33. 33.True or false: drawing up a well bucket is a pull. (a) True (b) False
  34. 34.💪 Which force is at work: a compass needle turns? (a) muscular force (b) gravity (c) magnetic force (d) friction
  35. 35.💪 Which force is at work: a rolling ball slows? (a) muscular force (b) magnetic force (c) gravity (d) friction
  36. 36.Which of these is caused by gravity? (a) brakes stop a bicycle (b) lifting a school bag (c) rain falls to the ground (d) rubbing hands warms them
  37. 37.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  38. 38.Which of these is caused by friction? (a) a magnet picks up pins (b) a thrown ball comes down (c) lifting a school bag (d) rubbing hands warms them
  39. 39.💪 Which force is at work: squeezing a lemon? (a) magnetic force (b) gravity (c) muscular force (d) friction
  40. 40.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push

Answer key

  1. 35
  2. to the left
  3. newton (N)
  4. squeezing a lemon
  5. False
  6. 420
  7. a rolling ball slows
  8. 10
  9. a thrown ball comes down
  10. a pull
  11. friction
  12. a push
  13. True
  14. True
  15. friction
  16. 100
  17. False
  18. gravity
  19. to the left
  20. False
  21. brakes stop a bicycle
  22. 13
  23. 51
  24. pedalling a cycle
  25. a river flows downhill
  26. 20
  27. a push
  28. gravity
  29. a push
  30. friction
  31. a pull
  32. 70
  33. True
  34. magnetic force
  35. friction
  36. rain falls to the ground
  37. a push
  38. rubbing hands warms them
  39. muscular force
  40. a push

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