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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 19 · 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.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) doubled (d) balanced
  2. 2.True or false: kicking a football is a pull. (a) True (b) False
  3. 3.True or false: pulling up your socks is a push. (a) True (b) False
  4. 4.True or false: pulling a cart is a pull. (a) False (b) True
  5. 5.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) muscular force (c) friction (d) gravity
  6. 6.💪 Two children push a box to the right, one with 50 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  7. 7.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  8. 8.💪 A cart is pulled to the right with 25 N and to the left with 10 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  9. 9.True or false: opening a drawer is a push. (a) True (b) False
  10. 10.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) friction (d) gravity
  11. 11.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) friction (d) gravity
  12. 12.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  13. 13.Which of these is caused by gravity? (a) rubbing hands warms them (b) brakes stop a bicycle (c) an apple falls down (d) a rolling ball slows
  14. 14.True or false: pushing a trolley is a push. (a) False (b) True
  15. 15.💪 A box weighs 320 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  16. 16.💪 A bag has a mass of 41 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  17. 17.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  18. 18.💪 A bag has a mass of 40 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  19. 19.💪 Which force is at work: a river flows downhill? (a) friction (b) gravity (c) muscular force (d) magnetic force
  20. 20.💪 Two children push a box to the right, one with 60 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  21. 21.💪 Two children push a box to the right, one with 40 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  22. 22.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) metre (m) (d) newton (N)
  23. 23.Which of these is caused by muscular force? (a) a rolling ball slows (b) lifting a school bag (c) a compass needle turns (d) a fridge magnet sticks
  24. 24.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  25. 25.True or false: drawing up a well bucket is a pull. (a) False (b) True
  26. 26.True or false: pressing a doorbell is a push. (a) False (b) True
  27. 27.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
  28. 28.Which of these is caused by gravity? (a) brakes stop a bicycle (b) lifting a school bag (c) a rolling ball slows (d) rain falls to the ground
  29. 29.Which of these is caused by magnetic force? (a) lifting a school bag (b) a fridge magnet sticks (c) rubbing hands warms them (d) rain falls to the ground
  30. 30.True or false: a tug of war is a pull. (a) True (b) False
  31. 31.💪 In a tug of war, one team pulls right with 85 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  32. 32.💪 Which force is at work: a thrown ball comes down? (a) muscular force (b) gravity (c) friction (d) magnetic force
  33. 33.True or false: pulling up your socks is a pull. (a) False (b) True
  34. 34.Which of these is caused by magnetic force? (a) squeezing a lemon (b) a magnet picks up pins (c) a river flows downhill (d) brakes stop a bicycle
  35. 35.True or false: pressing a doorbell is a pull. (a) False (b) True
  36. 36.💪 A cart is pulled to the right with 25 N and to the left with 15 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  37. 37.Which of these is caused by muscular force? (a) a fridge magnet sticks (b) rain falls to the ground (c) a thrown ball comes down (d) squeezing a lemon
  38. 38.True or false: closing a drawer is a push. (a) True (b) False
  39. 39.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  40. 40.True or false: closing a drawer is a pull. (a) False (b) True

Answer key

  1. balanced
  2. False
  3. False
  4. True
  5. gravity
  6. 90
  7. a push
  8. to the right
  9. False
  10. gravity
  11. friction
  12. 20
  13. an apple falls down
  14. True
  15. 32
  16. 410
  17. a pull
  18. 400
  19. gravity
  20. 135
  21. 140
  22. newton (N)
  23. lifting a school bag
  24. a pull
  25. True
  26. True
  27. push or a pull
  28. rain falls to the ground
  29. a fridge magnet sticks
  30. True
  31. 40
  32. gravity
  33. True
  34. a magnet picks up pins
  35. False
  36. to the right
  37. squeezing a lemon
  38. True
  39. 15
  40. False

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