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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 582 · 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 gravity? (a) a rolling ball slows (b) shoes grip the floor (c) an apple falls down (d) a fridge magnet sticks
  2. 2.Which of these is caused by muscular force? (a) pedalling a cycle (b) a rolling ball slows (c) a thrown ball comes down (d) a compass needle turns
  3. 3.Which of these is caused by gravity? (a) brakes stop a bicycle (b) lifting a school bag (c) squeezing a lemon (d) a river flows downhill
  4. 4.💪 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) no net force (b) to the right (c) to the left
  5. 5.Which of these is caused by friction? (a) squeezing a lemon (b) pedalling a cycle (c) a rolling ball slows (d) a river flows downhill
  6. 6.💪 Which can a force NOT do? (a) stop it moving (b) start it moving (c) change its shape (d) change its colour
  7. 7.💪 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?
  8. 8.True or false: pushing a trolley is a pull. (a) True (b) False
  9. 9.True or false: pushing a swing is a push. (a) True (b) False
  10. 10.💪 A bag has a mass of 42 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  11. 11.True or false: pushing a swing is a pull. (a) False (b) True
  12. 12.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  13. 13.💪 A bag has a mass of 30 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  14. 14.Which of these is caused by friction? (a) a river flows downhill (b) a fridge magnet sticks (c) rubbing hands warms them (d) pedalling a cycle
  15. 15.True or false: a tug of war is a push. (a) False (b) True
  16. 16.💪 A bag has a mass of 59 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  17. 17.💪 A bag has a mass of 48 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  18. 18.💪 Which force is at work: pedalling a cycle? (a) friction (b) magnetic force (c) gravity (d) muscular force
  19. 19.💪 A force is a … (a) unit of time (b) push or a pull (c) kind of colour (d) type of sound
  20. 20.True or false: kicking a football is a pull. (a) True (b) False
  21. 21.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  22. 22.True or false: pushing a trolley is a push. (a) False (b) True
  23. 23.💪 Two children push a box to the right, one with 65 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  24. 24.💪 Which force is at work: a thrown ball comes down? (a) gravity (b) magnetic force (c) muscular force (d) friction
  25. 25.True or false: plucking a mango is a pull. (a) False (b) True
  26. 26.True or false: pulling a cart is a push. (a) True (b) False
  27. 27.True or false: drawing up a well bucket is a pull. (a) True (b) False
  28. 28.💪 A bag has a mass of 15 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  29. 29.💪 Two children push a box to the right, one with 100 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  30. 30.💪 In a tug of war, one team pulls right with 75 N and the other pulls left with 65 N. What is the size of the net force, in newtons?
  31. 31.True or false: pressing a doorbell is a pull. (a) True (b) False
  32. 32.💪 In a tug of war, one team pulls right with 85 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  33. 33.💪 A bag has a mass of 56 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  34. 34.Which of these is caused by friction? (a) rain falls to the ground (b) squeezing a lemon (c) shoes grip the floor (d) pedalling a cycle
  35. 35.💪 A cart is pulled to the right with 40 N and to the left with 55 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  36. 36.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  37. 37.💪 A box weighs 280 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  38. 38.True or false: pulling up your socks is a push. (a) False (b) True
  39. 39.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 70 N. What is the size of the net force, in newtons?
  40. 40.💪 A cart is pulled to the right with 55 N and to the left with 55 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left

Answer key

  1. an apple falls down
  2. pedalling a cycle
  3. a river flows downhill
  4. no net force
  5. a rolling ball slows
  6. change its colour
  7. 45
  8. False
  9. True
  10. 420
  11. False
  12. a push
  13. 300
  14. rubbing hands warms them
  15. False
  16. 590
  17. 480
  18. muscular force
  19. push or a pull
  20. False
  21. a pull
  22. True
  23. 70
  24. gravity
  25. True
  26. False
  27. True
  28. 150
  29. 190
  30. 10
  31. False
  32. 40
  33. 560
  34. shoes grip the floor
  35. to the left
  36. a push
  37. 28
  38. False
  39. 20
  40. no net force

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