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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 970 · 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.💪 A bag has a mass of 38 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  2. 2.💪 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?
  3. 3.Which of these is caused by gravity? (a) shoes grip the floor (b) rain falls to the ground (c) pedalling a cycle (d) a rolling ball slows
  4. 4.True or false: pulling a cart is a push. (a) False (b) True
  5. 5.True or false: drawing up a well bucket is a push. (a) False (b) True
  6. 6.💪 Which can a force NOT do? (a) start it moving (b) change its colour (c) stop it moving (d) change its shape
  7. 7.True or false: a tug of war is a push. (a) True (b) False
  8. 8.💪 Two children push a box to the right, one with 85 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  9. 9.Which of these is caused by gravity? (a) brakes stop a bicycle (b) lifting a school bag (c) a magnet picks up pins (d) a river flows downhill
  10. 10.💪 A force is a … (a) push or a pull (b) type of sound (c) unit of time (d) kind of colour
  11. 11.💪 A box weighs 320 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  12. 12.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  13. 13.💪 In a tug of war, one team pulls left with 50 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  14. 14.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  15. 15.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
  16. 16.💪 Two children push a box to the right, one with 100 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  17. 17.💪 A box weighs 30 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  18. 18.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  19. 19.💪 In a tug of war, one team pulls right with 15 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  20. 20.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  21. 21.True or false: closing a drawer is a push. (a) True (b) False
  22. 22.💪 In which unit do we measure force? (a) second (s) (b) metre (m) (c) litre (L) (d) newton (N)
  23. 23.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
  24. 24.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) lifting a school bag (c) a rolling ball slows (d) rain falls to the ground
  25. 25.💪 Two children push a box to the right, one with 100 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  26. 26.💪 A bag has a mass of 3 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  27. 27.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) magnetic force (c) muscular force (d) gravity
  28. 28.True or false: kicking a football is a push. (a) False (b) True
  29. 29.Which of these is caused by friction? (a) squeezing a lemon (b) a magnet picks up pins (c) brakes stop a bicycle (d) a compass needle turns
  30. 30.True or false: opening a drawer is a push. (a) True (b) False
  31. 31.True or false: pushing a trolley is a pull. (a) True (b) False
  32. 32.Which of these is caused by friction? (a) lifting a school bag (b) an apple falls down (c) a magnet picks up pins (d) shoes grip the floor
  33. 33.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
  34. 34.💪 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?
  35. 35.💪 A cart is pulled to the right with 100 N and to the left with 100 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  36. 36.💪 Which force is at work: brakes stop a bicycle? (a) magnetic force (b) muscular force (c) gravity (d) friction
  37. 37.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) friction (c) magnetic force (d) gravity
  38. 38.True or false: plucking a mango is a push. (a) False (b) True
  39. 39.Which of these is caused by magnetic force? (a) a fridge magnet sticks (b) squeezing a lemon (c) pedalling a cycle (d) shoes grip the floor
  40. 40.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 55 N. What is the size of the net force, in newtons?

Answer key

  1. 380
  2. 15
  3. rain falls to the ground
  4. False
  5. False
  6. change its colour
  7. False
  8. 180
  9. a river flows downhill
  10. push or a pull
  11. 32
  12. 12
  13. 45
  14. a push
  15. a pull
  16. 135
  17. 3
  18. a pull
  19. 10
  20. a push
  21. True
  22. newton (N)
  23. a pull
  24. a magnet picks up pins
  25. 200
  26. 30
  27. magnetic force
  28. True
  29. brakes stop a bicycle
  30. False
  31. False
  32. shoes grip the floor
  33. 10
  34. 5
  35. no net force
  36. friction
  37. friction
  38. False
  39. a fridge magnet sticks
  40. 20

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