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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 248 · 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 of these is caused by magnetic force? (a) rain falls to the ground (b) a magnet picks up pins (c) brakes stop a bicycle (d) a rolling ball slows
  2. 2.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
  3. 3.💪 Which force is at work: rain falls to the ground? (a) friction (b) magnetic force (c) muscular force (d) gravity
  4. 4.True or false: kicking a football is a pull. (a) True (b) False
  5. 5.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 40 N. What is the size of the net force, in newtons?
  6. 6.Which of these is caused by gravity? (a) a magnet picks up pins (b) an apple falls down (c) brakes stop a bicycle (d) shoes grip the floor
  7. 7.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 40 N. What is the size of the net force, in newtons?
  8. 8.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  9. 9.💪 Which force is at work: pedalling a cycle? (a) gravity (b) friction (c) muscular force (d) magnetic force
  10. 10.💪 Which force is at work: a magnet picks up pins? (a) magnetic force (b) gravity (c) muscular force (d) friction
  11. 11.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  12. 12.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
  13. 13.💪 A cart is pulled to the right with 80 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
  14. 14.💪 Two children push a box to the right, one with 65 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  15. 15.Which of these is caused by gravity? (a) a magnet picks up pins (b) rain falls to the ground (c) pedalling a cycle (d) rubbing hands warms them
  16. 16.True or false: pulling a cart is a push. (a) True (b) False
  17. 17.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  18. 18.Which of these is caused by gravity? (a) a rolling ball slows (b) a river flows downhill (c) brakes stop a bicycle (d) rubbing hands warms them
  19. 19.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  20. 20.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) second (s) (d) metre (m)
  21. 21.Which of these is caused by gravity? (a) brakes stop a bicycle (b) a thrown ball comes down (c) shoes grip the floor (d) a compass needle turns
  22. 22.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  23. 23.True or false: plucking a mango is a push. (a) False (b) True
  24. 24.Which of these is caused by friction? (a) pedalling a cycle (b) a river flows downhill (c) brakes stop a bicycle (d) a thrown ball comes down
  25. 25.💪 In a tug of war, one team pulls right with 45 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
  26. 26.💪 Two children push a box to the right, one with 45 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  27. 27.💪 Which force is at work: shoes grip the floor? (a) muscular force (b) magnetic force (c) friction (d) gravity
  28. 28.True or false: pressing a doorbell is a pull. (a) True (b) False
  29. 29.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) shoes grip the floor (c) a thrown ball comes down (d) a fridge magnet sticks
  30. 30.💪 A cart is pulled to the right with 50 N and to the left with 55 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  31. 31.Which of these is caused by friction? (a) a magnet picks up pins (b) rubbing hands warms them (c) pedalling a cycle (d) lifting a school bag
  32. 32.💪 A box weighs 260 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  33. 33.💪 A box weighs 150 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  34. 34.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
  35. 35.💪 A bag has a mass of 2 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  36. 36.True or false: plucking a mango is a pull. (a) True (b) False
  37. 37.💪 Which force is at work: squeezing a lemon? (a) magnetic force (b) friction (c) muscular force (d) gravity
  38. 38.💪 In a tug of war, one team pulls left with 55 N and the other pulls right with 35 N. What is the size of the net force, in newtons?
  39. 39.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
  40. 40.💪 Two children push a box to the right, one with 100 N and the other with 55 N. What is the net (total) force on the box, in newtons?

Answer key

  1. a magnet picks up pins
  2. 20
  3. gravity
  4. False
  5. 50
  6. an apple falls down
  7. 25
  8. a pull
  9. muscular force
  10. magnetic force
  11. a push
  12. push or a pull
  13. to the right
  14. 165
  15. rain falls to the ground
  16. False
  17. a pull
  18. a river flows downhill
  19. 41
  20. newton (N)
  21. a thrown ball comes down
  22. 20
  23. False
  24. brakes stop a bicycle
  25. 25
  26. 115
  27. friction
  28. False
  29. a fridge magnet sticks
  30. to the left
  31. rubbing hands warms them
  32. 26
  33. 15
  34. a pull
  35. 20
  36. True
  37. muscular force
  38. 20
  39. 10
  40. 155

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