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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 272 · 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.💪 In a tug of war, one team pulls right with 85 N and the other pulls left with 70 N. What is the size of the net force, in newtons?
  2. 2.💪 A box weighs 290 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  3. 3.💪 A force is a … (a) push or a pull (b) type of sound (c) kind of colour (d) unit of time
  4. 4.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  5. 5.True or false: hitting a cricket ball is a pull. (a) False (b) True
  6. 6.💪 A cart is pulled to the right with 50 N and to the left with 60 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  7. 7.Which of these is caused by gravity? (a) pedalling a cycle (b) a river flows downhill (c) a fridge magnet sticks (d) lifting a school bag
  8. 8.True or false: plucking a mango is a push. (a) True (b) False
  9. 9.Which of these is caused by magnetic force? (a) a thrown ball comes down (b) a fridge magnet sticks (c) an apple falls down (d) rain falls to the ground
  10. 10.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) friction (d) gravity
  11. 11.💪 A box weighs 60 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  12. 12.💪 In which unit do we measure force? (a) metre (m) (b) litre (L) (c) newton (N) (d) second (s)
  13. 13.💪 A bag has a mass of 18 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  14. 14.True or false: pushing a trolley is a push. (a) True (b) False
  15. 15.💪 Two children push a box to the right, one with 80 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  16. 16.Which of these is caused by magnetic force? (a) squeezing a lemon (b) rain falls to the ground (c) a thrown ball comes down (d) a magnet picks up pins
  17. 17.True or false: pushing a swing is a pull. (a) True (b) False
  18. 18.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  19. 19.💪 Which force is at work: a compass needle turns? (a) gravity (b) friction (c) magnetic force (d) muscular force
  20. 20.Which of these is caused by gravity? (a) brakes stop a bicycle (b) pedalling a cycle (c) an apple falls down (d) lifting a school bag
  21. 21.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  22. 22.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  23. 23.💪 Which force is at work: brakes stop a bicycle? (a) gravity (b) muscular force (c) magnetic force (d) friction
  24. 24.💪 A box weighs 260 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 Two children push a box to the right, one with 40 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  26. 26.💪 Which force is at work: an apple falls down? (a) friction (b) magnetic force (c) muscular force (d) gravity
  27. 27.💪 A box weighs 50 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  28. 28.💪 Two children push a box to the right, one with 55 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  29. 29.True or false: pressing a doorbell is a push. (a) False (b) True
  30. 30.💪 Two children push a box to the right, one with 90 N and the other with 45 N. What is the net (total) force on the box, in newtons?
  31. 31.True or false: kicking a football is a push. (a) True (b) False
  32. 32.💪 Which force is at work: rain falls to the ground? (a) gravity (b) muscular force (c) magnetic force (d) friction
  33. 33.Which of these is caused by friction? (a) rain falls to the ground (b) a thrown ball comes down (c) a river flows downhill (d) a rolling ball slows
  34. 34.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  35. 35.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) gravity (c) friction (d) muscular force
  36. 36.💪 A bag has a mass of 22 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  37. 37.True or false: plucking a mango is a pull. (a) True (b) False
  38. 38.💪 A box weighs 10 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  39. 39.💪 A cart is pulled to the right with 20 N and to the left with 20 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  40. 40.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) magnetic force (c) friction (d) gravity

Answer key

  1. 15
  2. 29
  3. push or a pull
  4. a pull
  5. False
  6. to the left
  7. a river flows downhill
  8. False
  9. a fridge magnet sticks
  10. gravity
  11. 6
  12. newton (N)
  13. 180
  14. True
  15. 170
  16. a magnet picks up pins
  17. False
  18. a pull
  19. magnetic force
  20. an apple falls down
  21. 170
  22. 15
  23. friction
  24. 26
  25. 55
  26. gravity
  27. 5
  28. 130
  29. True
  30. 135
  31. True
  32. gravity
  33. a rolling ball slows
  34. a push
  35. friction
  36. 220
  37. True
  38. 1
  39. no net force
  40. friction

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