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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 639 · 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) change its shape (b) stop it moving (c) change its colour (d) start it moving
  2. 2.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
  3. 3.💪 A cart is pulled to the right with 95 N and to the left with 80 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  4. 4.True or false: pulling up your socks is a push. (a) True (b) False
  5. 5.💪 A bag has a mass of 49 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  6. 6.Which of these is caused by friction? (a) squeezing a lemon (b) brakes stop a bicycle (c) a thrown ball comes down (d) rain falls to the ground
  7. 7.💪 A box weighs 400 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  8. 8.Which of these is caused by magnetic force? (a) a river flows downhill (b) an apple falls down (c) a compass needle turns (d) a thrown ball comes down
  9. 9.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  10. 10.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  11. 11.True or false: pushing a trolley is a push. (a) False (b) True
  12. 12.💪 Which force is at work: pedalling a cycle? (a) muscular force (b) friction (c) gravity (d) magnetic force
  13. 13.💪 A cart is pulled to the right with 70 N and to the left with 65 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  14. 14.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 70 N. What is the size of the net force, in newtons?
  15. 15.💪 Two children push a box to the right, one with 75 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  16. 16.True or false: pressing a doorbell is a pull. (a) True (b) False
  17. 17.💪 Which force is at work: shoes grip the floor? (a) magnetic force (b) friction (c) muscular force (d) gravity
  18. 18.💪 In a tug of war, one team pulls left with 50 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
  19. 19.💪 Two children push a box to the right, one with 5 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  20. 20.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  21. 21.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  22. 22.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  23. 23.Which of these is caused by friction? (a) rubbing hands warms them (b) lifting a school bag (c) a compass needle turns (d) a fridge magnet sticks
  24. 24.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  25. 25.💪 Which force is at work: a river flows downhill? (a) muscular force (b) gravity (c) friction (d) magnetic force
  26. 26.Which of these is caused by gravity? (a) pedalling a cycle (b) brakes stop a bicycle (c) a rolling ball slows (d) an apple falls down
  27. 27.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
  28. 28.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) gravity (d) unbalanced
  29. 29.Which of these is caused by muscular force? (a) rubbing hands warms them (b) a compass needle turns (c) a fridge magnet sticks (d) lifting a school bag
  30. 30.True or false: closing a drawer is a push. (a) True (b) False
  31. 31.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
  32. 32.💪 Two children push a box to the right, one with 30 N and the other with 60 N. What is the net (total) force on the box, in newtons?
  33. 33.True or false: closing a drawer is a pull. (a) False (b) True
  34. 34.True or false: drawing up a well bucket is a pull. (a) True (b) False
  35. 35.Which of these is caused by friction? (a) shoes grip the floor (b) pedalling a cycle (c) a fridge magnet sticks (d) squeezing a lemon
  36. 36.True or false: hitting a cricket ball is a push. (a) False (b) True
  37. 37.💪 A box weighs 350 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  38. 38.💪 A cart is pulled to the right with 35 N and to the left with 35 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  39. 39.💪 Which force is at work: a fridge magnet sticks? (a) muscular force (b) gravity (c) magnetic force (d) friction
  40. 40.💪 Is kicking a football a push or a pull? (a) a push (b) a pull

Answer key

  1. change its colour
  2. a pull
  3. to the right
  4. False
  5. 490
  6. brakes stop a bicycle
  7. 40
  8. a compass needle turns
  9. a push
  10. a push
  11. True
  12. muscular force
  13. to the right
  14. 5
  15. 105
  16. False
  17. friction
  18. 30
  19. 80
  20. a push
  21. 25
  22. a push
  23. rubbing hands warms them
  24. a pull
  25. gravity
  26. an apple falls down
  27. a pull
  28. balanced
  29. lifting a school bag
  30. True
  31. 70
  32. 90
  33. False
  34. True
  35. shoes grip the floor
  36. True
  37. 35
  38. no net force
  39. magnetic force
  40. a push

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