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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 717 · 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) rubbing hands warms them (b) a fridge magnet sticks (c) rain falls to the ground (d) shoes grip the floor
  2. 2.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  3. 3.💪 Two children push a box to the right, one with 25 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  4. 4.Which of these is caused by friction? (a) a magnet picks up pins (b) a thrown ball comes down (c) a fridge magnet sticks (d) a rolling ball slows
  5. 5.💪 A bag has a mass of 5 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  6. 6.True or false: opening a drawer is a push. (a) False (b) True
  7. 7.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  8. 8.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
  9. 9.True or false: pulling a cart is a pull. (a) True (b) False
  10. 10.Which of these is caused by muscular force? (a) rain falls to the ground (b) an apple falls down (c) lifting a school bag (d) rubbing hands warms them
  11. 11.Which of these is caused by friction? (a) a river flows downhill (b) rubbing hands warms them (c) an apple falls down (d) a compass needle turns
  12. 12.💪 A bag has a mass of 45 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  13. 13.True or false: a tug of war is a pull. (a) True (b) False
  14. 14.💪 A bag has a mass of 1 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  15. 15.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  16. 16.True or false: plucking a mango is a push. (a) True (b) False
  17. 17.Which of these is caused by friction? (a) lifting a school bag (b) shoes grip the floor (c) a magnet picks up pins (d) an apple falls down
  18. 18.💪 A force is a … (a) unit of time (b) kind of colour (c) type of sound (d) push or a pull
  19. 19.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  20. 20.True or false: drawing up a well bucket is a pull. (a) True (b) False
  21. 21.💪 A cart is pulled to the right with 100 N and to the left with 85 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  22. 22.True or false: opening a drawer is a pull. (a) True (b) False
  23. 23.💪 Two children push a box to the right, one with 50 N and the other with 65 N. What is the net (total) force on the box, in newtons?
  24. 24.💪 Two children push a box to the right, one with 60 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  25. 25.True or false: pressing a doorbell is a push. (a) False (b) True
  26. 26.💪 A box weighs 420 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  27. 27.💪 In a tug of war, one team pulls left with 80 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
  28. 28.💪 Which force pulls everything towards the Earth? (a) wind (b) magnetism (c) friction (d) gravity
  29. 29.💪 A box weighs 70 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  30. 30.💪 In a tug of war, one team pulls right with 100 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  31. 31.💪 Which can a force NOT do? (a) change its colour (b) start it moving (c) change its shape (d) stop it moving
  32. 32.Which of these is caused by friction? (a) lifting a school bag (b) rain falls to the ground (c) brakes stop a bicycle (d) a river flows downhill
  33. 33.💪 In a tug of war, one team pulls right with 40 N and the other pulls left with 30 N. What is the size of the net force, in newtons?
  34. 34.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) magnetic force (c) gravity (d) friction
  35. 35.💪 Two children push a box to the right, one with 65 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  36. 36.💪 Two children push a box to the right, one with 25 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  37. 37.Which of these is caused by muscular force? (a) a fridge magnet sticks (b) squeezing a lemon (c) a rolling ball slows (d) a magnet picks up pins
  38. 38.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) unbalanced (d) gravity
  39. 39.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  40. 40.💪 A cart is pulled to the right with 100 N and to the left with 110 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right

Answer key

  1. a fridge magnet sticks
  2. a push
  3. 55
  4. a rolling ball slows
  5. 50
  6. False
  7. 10
  8. a pull
  9. True
  10. lifting a school bag
  11. rubbing hands warms them
  12. 450
  13. True
  14. 10
  15. a pull
  16. False
  17. shoes grip the floor
  18. push or a pull
  19. a pull
  20. True
  21. to the right
  22. True
  23. 115
  24. 100
  25. True
  26. 42
  27. 70
  28. gravity
  29. 7
  30. 95
  31. change its colour
  32. brakes stop a bicycle
  33. 10
  34. friction
  35. 95
  36. 45
  37. squeezing a lemon
  38. balanced
  39. a pull
  40. to the left

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