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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 109 · 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) a thrown ball comes down (b) a magnet picks up pins (c) a river flows downhill (d) a rolling ball slows
  2. 2.True or false: pushing a trolley is a pull. (a) False (b) True
  3. 3.True or false: pushing a swing is a pull. (a) True (b) False
  4. 4.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
  5. 5.True or false: kicking a football is a pull. (a) True (b) False
  6. 6.Which of these is caused by muscular force? (a) a thrown ball comes down (b) brakes stop a bicycle (c) a magnet picks up pins (d) lifting a school bag
  7. 7.💪 A bag has a mass of 40 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  8. 8.Which of these is caused by gravity? (a) a thrown ball comes down (b) lifting a school bag (c) a fridge magnet sticks (d) a magnet picks up pins
  9. 9.Which of these is caused by gravity? (a) rain falls to the ground (b) pedalling a cycle (c) a fridge magnet sticks (d) a compass needle turns
  10. 10.True or false: opening a drawer is a pull. (a) True (b) False
  11. 11.💪 In a tug of war, one team pulls left with 35 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
  12. 12.True or false: closing a drawer is a push. (a) True (b) False
  13. 13.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  14. 14.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  15. 15.💪 Two children push a box to the right, one with 30 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  16. 16.💪 Which can a force NOT do? (a) change its colour (b) start it moving (c) change its shape (d) stop it moving
  17. 17.💪 Which force is at work: a river flows downhill? (a) gravity (b) muscular force (c) magnetic force (d) friction
  18. 18.💪 In a tug of war, one team pulls left with 10 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  19. 19.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  20. 20.💪 Which force pulls everything towards the Earth? (a) gravity (b) magnetism (c) wind (d) friction
  21. 21.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) gravity (c) muscular force (d) friction
  22. 22.True or false: plucking a mango is a push. (a) False (b) True
  23. 23.💪 Which force is at work: shoes grip the floor? (a) friction (b) muscular force (c) magnetic force (d) gravity
  24. 24.True or false: pulling up your socks is a pull. (a) True (b) False
  25. 25.True or false: drawing up a well bucket is a push. (a) False (b) True
  26. 26.💪 A bag has a mass of 14 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.Which of these is caused by friction? (a) a compass needle turns (b) a river flows downhill (c) brakes stop a bicycle (d) a thrown ball comes down
  28. 28.True or false: pressing a doorbell is a push. (a) True (b) False
  29. 29.💪 Which force is at work: rain falls to the ground? (a) gravity (b) muscular force (c) friction (d) magnetic force
  30. 30.True or false: pulling a cart is a push. (a) False (b) True
  31. 31.💪 Two children push a box to the right, one with 5 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  32. 32.True or false: hitting a cricket ball is a pull. (a) True (b) False
  33. 33.💪 A box weighs 370 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  34. 34.True or false: hitting a cricket ball is a push. (a) False (b) True
  35. 35.Which of these is caused by friction? (a) squeezing a lemon (b) rain falls to the ground (c) lifting a school bag (d) a rolling ball slows
  36. 36.💪 A cart is pulled to the right with 20 N and to the left with 25 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  37. 37.Which of these is caused by friction? (a) lifting a school bag (b) shoes grip the floor (c) pedalling a cycle (d) rain falls to the ground
  38. 38.💪 Two children push a box to the right, one with 60 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  39. 39.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  40. 40.💪 Two children push a box to the right, one with 20 N and the other with 30 N. What is the net (total) force on the box, in newtons?

Answer key

  1. a magnet picks up pins
  2. False
  3. False
  4. newton (N)
  5. False
  6. lifting a school bag
  7. 400
  8. a thrown ball comes down
  9. rain falls to the ground
  10. True
  11. 5
  12. True
  13. a pull
  14. 15
  15. 45
  16. change its colour
  17. gravity
  18. 5
  19. a pull
  20. gravity
  21. gravity
  22. False
  23. friction
  24. True
  25. False
  26. 140
  27. brakes stop a bicycle
  28. True
  29. gravity
  30. False
  31. 25
  32. False
  33. 37
  34. True
  35. a rolling ball slows
  36. to the left
  37. shoes grip the floor
  38. 65
  39. a push
  40. 50

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