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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 571 · 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.True or false: plucking a mango is a push. (a) False (b) True
  2. 2.Which of these is caused by muscular force? (a) lifting a school bag (b) rubbing hands warms them (c) an apple falls down (d) a thrown ball comes down
  3. 3.💪 Which force is at work: a compass needle turns? (a) magnetic force (b) muscular force (c) gravity (d) friction
  4. 4.True or false: a tug of war is a pull. (a) True (b) False
  5. 5.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
  6. 6.💪 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?
  7. 7.True or false: pressing a doorbell is a push. (a) True (b) False
  8. 8.💪 Two children push a box to the right, one with 95 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  9. 9.True or false: opening a drawer is a pull. (a) True (b) False
  10. 10.💪 Two children push a box to the right, one with 80 N and the other with 10 N. What is the net (total) force on the box, in newtons?
  11. 11.True or false: pushing a trolley is a pull. (a) False (b) True
  12. 12.💪 Two children push a box to the right, one with 10 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  13. 13.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  14. 14.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) friction (c) gravity (d) magnetic force
  15. 15.True or false: pulling up your socks is a pull. (a) False (b) True
  16. 16.💪 Which force is at work: a rolling ball slows? (a) gravity (b) magnetic force (c) friction (d) muscular force
  17. 17.💪 Which force is at work: shoes grip the floor? (a) friction (b) muscular force (c) magnetic force (d) gravity
  18. 18.💪 In a tug of war, one team pulls left with 70 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
  19. 19.Which of these is caused by friction? (a) rain falls to the ground (b) a fridge magnet sticks (c) a rolling ball slows (d) a magnet picks up pins
  20. 20.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  21. 21.💪 Which force is at work: squeezing a lemon? (a) gravity (b) muscular force (c) friction (d) magnetic force
  22. 22.💪 Which force is at work: rain falls to the ground? (a) gravity (b) magnetic force (c) friction (d) muscular force
  23. 23.True or false: pulling up your socks is a push. (a) True (b) False
  24. 24.True or false: pressing a doorbell is a pull. (a) True (b) False
  25. 25.Which of these is caused by gravity? (a) shoes grip the floor (b) a fridge magnet sticks (c) an apple falls down (d) a rolling ball slows
  26. 26.Which of these is caused by gravity? (a) a thrown ball comes down (b) a magnet picks up pins (c) brakes stop a bicycle (d) squeezing a lemon
  27. 27.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  28. 28.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) metre (m) (d) second (s)
  29. 29.💪 Two children push a box to the right, one with 75 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  30. 30.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
  31. 31.💪 A box weighs 280 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  32. 32.💪 A cart is pulled to the right with 100 N and to the left with 95 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  33. 33.Which of these is caused by magnetic force? (a) squeezing a lemon (b) a fridge magnet sticks (c) a river flows downhill (d) rubbing hands warms them
  34. 34.True or false: closing a drawer is a push. (a) True (b) False
  35. 35.💪 A bag has a mass of 14 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  36. 36.💪 Two children push a box to the right, one with 85 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  37. 37.💪 Two children push a box to the right, one with 60 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  38. 38.True or false: pushing a swing is a push. (a) False (b) True
  39. 39.💪 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) no net force (b) to the left (c) to the right
  40. 40.Which of these is caused by friction? (a) a compass needle turns (b) shoes grip the floor (c) a fridge magnet sticks (d) a thrown ball comes down

Answer key

  1. False
  2. lifting a school bag
  3. magnetic force
  4. True
  5. a pull
  6. 90
  7. True
  8. 115
  9. True
  10. 90
  11. False
  12. 50
  13. a pull
  14. gravity
  15. True
  16. friction
  17. friction
  18. 45
  19. a rolling ball slows
  20. a pull
  21. muscular force
  22. gravity
  23. False
  24. False
  25. an apple falls down
  26. a thrown ball comes down
  27. a push
  28. newton (N)
  29. 160
  30. push or a pull
  31. 28
  32. to the right
  33. a fridge magnet sticks
  34. True
  35. 140
  36. 115
  37. 155
  38. True
  39. to the right
  40. shoes grip the floor

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