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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 239 · 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 65 N and the other pulls left with 60 N. What is the size of the net force, in newtons?
  2. 2.💪 A cart is pulled to the right with 100 N and to the left with 115 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  3. 3.True or false: kicking a football is a pull. (a) False (b) True
  4. 4.💪 In which unit do we measure force? (a) second (s) (b) newton (N) (c) metre (m) (d) litre (L)
  5. 5.💪 Which force is at work: a river flows downhill? (a) friction (b) muscular force (c) gravity (d) magnetic force
  6. 6.💪 Which force is at work: an apple falls down? (a) muscular force (b) friction (c) magnetic force (d) gravity
  7. 7.Which of these is caused by muscular force? (a) rain falls to the ground (b) pedalling a cycle (c) a thrown ball comes down (d) a magnet picks up pins
  8. 8.True or false: drawing up a well bucket is a pull. (a) False (b) True
  9. 9.💪 A cart is pulled to the right with 85 N and to the left with 75 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  10. 10.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  11. 11.💪 Two children push a box to the right, one with 5 N and the other with 45 N. What is the net (total) force on the box, in newtons?
  12. 12.💪 Two children push a box to the right, one with 70 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  13. 13.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) friction (c) magnetic force (d) gravity
  14. 14.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  15. 15.Which of these is caused by gravity? (a) a fridge magnet sticks (b) lifting a school bag (c) squeezing a lemon (d) a thrown ball comes down
  16. 16.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  17. 17.True or false: pushing a trolley is a pull. (a) True (b) False
  18. 18.💪 A cart is pulled to the right with 70 N and to the left with 75 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  19. 19.Which of these is caused by friction? (a) rubbing hands warms them (b) a magnet picks up pins (c) lifting a school bag (d) a thrown ball comes down
  20. 20.💪 A cart is pulled to the right with 30 N and to the left with 25 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  21. 21.💪 Two children push a box to the right, one with 75 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  22. 22.💪 Two children push a box to the right, one with 20 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  23. 23.💪 A box weighs 240 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  24. 24.💪 A box weighs 520 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  26. 26.💪 A cart is pulled to the right with 55 N and to the left with 70 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  27. 27.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  28. 28.True or false: closing a drawer is a push. (a) False (b) True
  29. 29.Which of these is caused by muscular force? (a) a river flows downhill (b) a compass needle turns (c) rain falls to the ground (d) lifting a school bag
  30. 30.💪 A bag has a mass of 40 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  31. 31.💪 A bag has a mass of 19 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  32. 32.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) friction (c) gravity (d) magnetic force
  33. 33.Which of these is caused by friction? (a) a river flows downhill (b) squeezing a lemon (c) a thrown ball comes down (d) shoes grip the floor
  34. 34.True or false: plucking a mango is a push. (a) True (b) False
  35. 35.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  36. 36.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) gravity (c) muscular force (d) friction
  37. 37.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  38. 38.True or false: opening a drawer is a push. (a) True (b) False
  39. 39.True or false: pressing a doorbell is a push. (a) True (b) False
  40. 40.True or false: drawing up a well bucket is a push. (a) False (b) True

Answer key

  1. 5
  2. to the left
  3. False
  4. newton (N)
  5. gravity
  6. gravity
  7. pedalling a cycle
  8. True
  9. to the right
  10. a push
  11. 50
  12. 90
  13. friction
  14. a pull
  15. a thrown ball comes down
  16. a push
  17. False
  18. to the left
  19. rubbing hands warms them
  20. to the right
  21. 90
  22. 110
  23. 24
  24. 52
  25. a pull
  26. to the left
  27. a push
  28. True
  29. lifting a school bag
  30. 400
  31. 190
  32. gravity
  33. shoes grip the floor
  34. False
  35. a pull
  36. magnetic force
  37. a pull
  38. False
  39. True
  40. False

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