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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 136 · 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 can a force NOT do? (a) start it moving (b) change its shape (c) stop it moving (d) change its colour
  2. 2.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 30 N. What is the size of the net force, in newtons?
  3. 3.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  4. 4.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  5. 5.💪 Which force is at work: rain falls to the ground? (a) friction (b) muscular force (c) gravity (d) magnetic force
  6. 6.💪 In which unit do we measure force? (a) litre (L) (b) second (s) (c) metre (m) (d) newton (N)
  7. 7.Which of these is caused by magnetic force? (a) shoes grip the floor (b) a river flows downhill (c) pedalling a cycle (d) a magnet picks up pins
  8. 8.True or false: a tug of war is a pull. (a) False (b) True
  9. 9.💪 In a tug of war, one team pulls left with 20 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
  10. 10.True or false: kicking a football is a push. (a) False (b) True
  11. 11.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  12. 12.💪 Two children push a box to the right, one with 30 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  13. 13.💪 A box weighs 220 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  14. 14.💪 Two children push a box to the right, one with 70 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  15. 15.Which of these is caused by friction? (a) a thrown ball comes down (b) pedalling a cycle (c) a fridge magnet sticks (d) a rolling ball slows
  16. 16.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
  17. 17.True or false: hitting a cricket ball is a pull. (a) False (b) True
  18. 18.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) unbalanced (c) balanced (d) gravity
  19. 19.💪 A cart is pulled to the right with 35 N and to the left with 20 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  20. 20.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
  21. 21.💪 Two children push a box to the right, one with 60 N and the other with 25 N. What is the net (total) force on the box, in newtons?
  22. 22.Which of these is caused by friction? (a) a fridge magnet sticks (b) a magnet picks up pins (c) shoes grip the floor (d) a compass needle turns
  23. 23.💪 A box weighs 350 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  24. 24.💪 A bag has a mass of 44 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  25. 25.True or false: closing a drawer is a pull. (a) False (b) True
  26. 26.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  27. 27.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  28. 28.💪 Which force is at work: a compass needle turns? (a) muscular force (b) magnetic force (c) gravity (d) friction
  29. 29.True or false: a tug of war is a push. (a) False (b) True
  30. 30.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) gravity (c) friction (d) muscular force
  31. 31.True or false: plucking a mango is a pull. (a) True (b) False
  32. 32.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  33. 33.Which of these is caused by muscular force? (a) pedalling a cycle (b) an apple falls down (c) a fridge magnet sticks (d) rubbing hands warms them
  34. 34.Which of these is caused by gravity? (a) a rolling ball slows (b) a thrown ball comes down (c) a magnet picks up pins (d) rubbing hands warms them
  35. 35.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  36. 36.True or false: pressing a doorbell is a push. (a) False (b) True
  37. 37.True or false: hitting a cricket ball is a push. (a) True (b) False
  38. 38.True or false: drawing up a well bucket is a pull. (a) True (b) False
  39. 39.💪 A box weighs 390 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  40. 40.💪 A force is a … (a) type of sound (b) kind of colour (c) unit of time (d) push or a pull

Answer key

  1. change its colour
  2. 20
  3. a push
  4. a push
  5. gravity
  6. newton (N)
  7. a magnet picks up pins
  8. True
  9. 10
  10. True
  11. a push
  12. 125
  13. 22
  14. 85
  15. a rolling ball slows
  16. a pull
  17. False
  18. balanced
  19. to the right
  20. 5
  21. 85
  22. shoes grip the floor
  23. 35
  24. 440
  25. False
  26. a pull
  27. 55
  28. magnetic force
  29. False
  30. muscular force
  31. True
  32. a push
  33. pedalling a cycle
  34. a thrown ball comes down
  35. a pull
  36. True
  37. True
  38. True
  39. 39
  40. push or a pull

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