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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 764 · 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: a compass needle turns? (a) gravity (b) magnetic force (c) muscular force (d) friction
  2. 2.💪 Two children push a box to the right, one with 15 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  3. 3.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
  4. 4.💪 Which force is at work: a fridge magnet sticks? (a) gravity (b) friction (c) muscular force (d) magnetic force
  5. 5.💪 Which force pulls everything towards the Earth? (a) magnetism (b) friction (c) wind (d) gravity
  6. 6.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  7. 7.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) muscular force (c) gravity (d) friction
  8. 8.💪 Which force is at work: squeezing a lemon? (a) friction (b) gravity (c) muscular force (d) magnetic force
  9. 9.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  10. 10.💪 In which unit do we measure force? (a) litre (L) (b) second (s) (c) newton (N) (d) metre (m)
  11. 11.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  12. 12.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) friction (c) gravity (d) muscular force
  13. 13.💪 Which can a force NOT do? (a) start it moving (b) change its colour (c) stop it moving (d) change its shape
  14. 14.True or false: opening a drawer is a pull. (a) True (b) False
  15. 15.💪 Which force is at work: rain falls to the ground? (a) friction (b) gravity (c) magnetic force (d) muscular force
  16. 16.💪 A box weighs 260 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) False (b) True
  18. 18.True or false: pushing a trolley is a push. (a) True (b) False
  19. 19.True or false: pushing a swing is a push. (a) True (b) False
  20. 20.True or false: a tug of war is a pull. (a) False (b) True
  21. 21.True or false: pressing a doorbell is a push. (a) False (b) True
  22. 22.💪 A cart is pulled to the right with 30 N and to the left with 30 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  23. 23.True or false: kicking a football is a push. (a) False (b) True
  24. 24.True or false: opening a drawer is a push. (a) False (b) True
  25. 25.💪 A cart is pulled to the right with 45 N and to the left with 35 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  26. 26.💪 Two children push a box to the right, one with 95 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  27. 27.Which of these is caused by friction? (a) squeezing a lemon (b) rubbing hands warms them (c) a magnet picks up pins (d) a thrown ball comes down
  28. 28.💪 Which force is at work: shoes grip the floor? (a) gravity (b) muscular force (c) friction (d) magnetic force
  29. 29.Which of these is caused by friction? (a) a magnet picks up pins (b) lifting a school bag (c) shoes grip the floor (d) pedalling a cycle
  30. 30.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  31. 31.💪 A cart is pulled to the right with 50 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
  32. 32.Which of these is caused by friction? (a) rain falls to the ground (b) a compass needle turns (c) brakes stop a bicycle (d) pedalling a cycle
  33. 33.True or false: pulling a cart is a push. (a) True (b) False
  34. 34.💪 Which force is at work: a rolling ball slows? (a) gravity (b) muscular force (c) magnetic force (d) friction
  35. 35.💪 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?
  36. 36.💪 Is closing 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 35 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  38. 38.True or false: drawing up a well bucket is a push. (a) True (b) False
  39. 39.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  40. 40.💪 Two children push a box to the right, one with 20 N and the other with 30 N. What is the net (total) force on the box, in newtons?

Answer key

  1. magnetic force
  2. 20
  3. 15
  4. magnetic force
  5. gravity
  6. a pull
  7. friction
  8. muscular force
  9. a push
  10. newton (N)
  11. 41
  12. gravity
  13. change its colour
  14. True
  15. gravity
  16. 26
  17. False
  18. True
  19. True
  20. True
  21. True
  22. no net force
  23. True
  24. False
  25. to the right
  26. 165
  27. rubbing hands warms them
  28. friction
  29. shoes grip the floor
  30. 25
  31. to the left
  32. brakes stop a bicycle
  33. False
  34. friction
  35. 95
  36. a push
  37. 110
  38. False
  39. a push
  40. 50

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