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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 759 · 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 65 N and the other pulls left with 35 N. What is the size of the net force, in newtons?
  2. 2.💪 Which force is at work: an apple falls down? (a) magnetic force (b) gravity (c) muscular force (d) friction
  3. 3.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  4. 4.💪 Which force is at work: pedalling a cycle? (a) gravity (b) muscular force (c) friction (d) magnetic force
  5. 5.Which of these is caused by magnetic force? (a) a rolling ball slows (b) pedalling a cycle (c) a compass needle turns (d) a thrown ball comes down
  6. 6.True or false: a tug of war is a pull. (a) False (b) True
  7. 7.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  8. 8.True or false: drawing up a well bucket is a push. (a) False (b) True
  9. 9.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) gravity (d) magnetic force
  10. 10.💪 Two children push a box to the right, one with 75 N and the other with 5 N. What is the net (total) force on the box, in newtons?
  11. 11.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
  12. 12.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) gravity (c) balanced (d) unbalanced
  13. 13.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) a river flows downhill (c) an apple falls down (d) a thrown ball comes down
  14. 14.💪 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 right (b) to the left (c) no net force
  15. 15.True or false: hitting a cricket ball is a pull. (a) True (b) False
  16. 16.True or false: pressing a doorbell is a pull. (a) False (b) True
  17. 17.💪 Two children push a box to the right, one with 50 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  18. 18.💪 Two children push a box to the right, one with 75 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  19. 19.💪 A bag has a mass of 50 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  20. 20.Which of these is caused by gravity? (a) squeezing a lemon (b) a rolling ball slows (c) a river flows downhill (d) a fridge magnet sticks
  21. 21.💪 Which force is at work: a magnet picks up pins? (a) gravity (b) friction (c) muscular force (d) magnetic force
  22. 22.True or false: closing a drawer is a pull. (a) False (b) True
  23. 23.💪 A bag has a mass of 59 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  24. 24.True or false: pushing a trolley is a pull. (a) False (b) True
  25. 25.Which of these is caused by gravity? (a) squeezing a lemon (b) a rolling ball slows (c) rain falls to the ground (d) a fridge magnet sticks
  26. 26.💪 A box weighs 20 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  27. 27.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  28. 28.💪 A cart is pulled to the right with 45 N and to the left with 30 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
  29. 29.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  30. 30.💪 Two children push a box to the right, one with 5 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  31. 31.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  32. 32.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  33. 33.True or false: pulling up your socks is a pull. (a) True (b) False
  34. 34.Which of these is caused by friction? (a) a fridge magnet sticks (b) a rolling ball slows (c) rain falls to the ground (d) an apple falls down
  35. 35.Which of these is caused by muscular force? (a) a magnet picks up pins (b) shoes grip the floor (c) a thrown ball comes down (d) lifting a school bag
  36. 36.💪 A box weighs 460 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  37. 37.💪 Two children push a box to the right, one with 10 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  38. 38.Which of these is caused by friction? (a) a fridge magnet sticks (b) squeezing a lemon (c) lifting a school bag (d) shoes grip the floor
  39. 39.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) friction (c) gravity (d) muscular force
  40. 40.💪 A cart is pulled to the right with 95 N and to the left with 100 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left

Answer key

  1. 30
  2. gravity
  3. a push
  4. muscular force
  5. a compass needle turns
  6. True
  7. 41
  8. False
  9. muscular force
  10. 80
  11. 30
  12. balanced
  13. a magnet picks up pins
  14. no net force
  15. False
  16. False
  17. 135
  18. 160
  19. 500
  20. a river flows downhill
  21. magnetic force
  22. False
  23. 590
  24. False
  25. rain falls to the ground
  26. 2
  27. a pull
  28. to the right
  29. a push
  30. 55
  31. a pull
  32. a push
  33. True
  34. a rolling ball slows
  35. lifting a school bag
  36. 46
  37. 45
  38. shoes grip the floor
  39. gravity
  40. to the left

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