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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 348 · 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 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  2. 2.Which of these is caused by friction? (a) shoes grip the floor (b) squeezing a lemon (c) rain falls to the ground (d) a river flows downhill
  3. 3.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  4. 4.True or false: pushing a trolley is a push. (a) True (b) False
  5. 5.True or false: kicking a football is a pull. (a) False (b) True
  6. 6.💪 Which can a force NOT do? (a) change its shape (b) start it moving (c) stop it moving (d) change its colour
  7. 7.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
  8. 8.💪 Two children push a box to the right, one with 5 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  9. 9.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  10. 10.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  11. 11.💪 Two children push a box to the right, one with 70 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  12. 12.💪 Which force is at work: lifting a school bag? (a) muscular force (b) magnetic force (c) gravity (d) friction
  13. 13.Which of these is caused by magnetic force? (a) a compass needle turns (b) squeezing a lemon (c) a rolling ball slows (d) a thrown ball comes down
  14. 14.Which of these is caused by gravity? (a) a river flows downhill (b) rubbing hands warms them (c) a magnet picks up pins (d) lifting a school bag
  15. 15.💪 Which force is at work: squeezing a lemon? (a) muscular force (b) magnetic force (c) gravity (d) friction
  16. 16.💪 A bag has a mass of 51 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  17. 17.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  18. 18.Which of these is caused by friction? (a) a fridge magnet sticks (b) brakes stop a bicycle (c) an apple falls down (d) rain falls to the ground
  19. 19.True or false: a tug of war is a push. (a) False (b) True
  20. 20.💪 A cart is pulled to the right with 35 N and to the left with 30 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  21. 21.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  22. 22.💪 Two children push a box to the right, one with 5 N and the other with 100 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.💪 In a tug of war, one team pulls right with 15 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  25. 25.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  26. 26.💪 Which force is at work: a fridge magnet sticks? (a) magnetic force (b) friction (c) gravity (d) muscular force
  27. 27.Which of these is caused by friction? (a) an apple falls down (b) lifting a school bag (c) rubbing hands warms them (d) rain falls to the ground
  28. 28.True or false: pulling a cart is a pull. (a) False (b) True
  29. 29.💪 Which force is at work: shoes grip the floor? (a) muscular force (b) friction (c) magnetic force (d) gravity
  30. 30.💪 In a tug of war, one team pulls left with 85 N and the other pulls right with 60 N. What is the size of the net force, in newtons?
  31. 31.💪 A bag has a mass of 13 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  32. 32.💪 A bag has a mass of 1 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  33. 33.💪 Two children push a box to the right, one with 60 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  34. 34.💪 Two children push a box to the right, one with 90 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  35. 35.True or false: opening a drawer is a pull. (a) False (b) True
  36. 36.💪 Which force is at work: a river flows downhill? (a) magnetic force (b) friction (c) gravity (d) muscular force
  37. 37.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  38. 38.True or false: drawing up a well bucket is a pull. (a) False (b) True
  39. 39.💪 In which unit do we measure force? (a) litre (L) (b) newton (N) (c) second (s) (d) metre (m)
  40. 40.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull

Answer key

  1. 5
  2. shoes grip the floor
  3. 25
  4. True
  5. False
  6. change its colour
  7. push or a pull
  8. 10
  9. a push
  10. 55
  11. 105
  12. muscular force
  13. a compass needle turns
  14. a river flows downhill
  15. muscular force
  16. 510
  17. a pull
  18. brakes stop a bicycle
  19. False
  20. to the right
  21. a push
  22. 105
  23. 24
  24. 10
  25. a push
  26. magnetic force
  27. rubbing hands warms them
  28. True
  29. friction
  30. 25
  31. 130
  32. 10
  33. 115
  34. 125
  35. True
  36. gravity
  37. a pull
  38. True
  39. newton (N)
  40. a pull

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