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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 269 · 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.💪 Two children push a box to the right, one with 80 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  2. 2.Which of these is caused by gravity? (a) a compass needle turns (b) a thrown ball comes down (c) a fridge magnet sticks (d) a rolling ball slows
  3. 3.True or false: closing a drawer is a pull. (a) False (b) True
  4. 4.💪 Two children push a box to the right, one with 10 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  5. 5.True or false: a tug of war is a push. (a) False (b) True
  6. 6.💪 Two children push a box to the right, one with 80 N and the other with 30 N. What is the net (total) force on the box, in newtons?
  7. 7.💪 Two children push a box to the right, one with 5 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  8. 8.💪 Two children push a box to the right, one with 35 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  9. 9.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  10. 10.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  11. 11.True or false: closing a drawer is a push. (a) False (b) True
  12. 12.True or false: drawing up a well bucket is a push. (a) True (b) False
  13. 13.💪 A bag has a mass of 41 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) an apple falls down (b) lifting a school bag (c) a river flows downhill (d) rubbing hands warms them
  15. 15.💪 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?
  16. 16.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  17. 17.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  18. 18.Which of these is caused by magnetic force? (a) a compass needle turns (b) brakes stop a bicycle (c) a thrown ball comes down (d) a river flows downhill
  19. 19.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) a magnet picks up pins (c) a thrown ball comes down (d) a river flows downhill
  20. 20.💪 A cart is pulled to the right with 45 N and to the left with 35 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  21. 21.True or false: pulling up your socks is a push. (a) True (b) False
  22. 22.True or false: pressing a doorbell is a pull. (a) False (b) True
  23. 23.💪 A cart is pulled to the right with 20 N and to the left with 30 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  24. 24.💪 Two children push a box to the right, one with 75 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  25. 25.💪 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?
  26. 26.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) muscular force (c) gravity (d) magnetic force
  27. 27.💪 Two children push a box to the right, one with 35 N and the other with 100 N. What is the net (total) force on the box, in newtons?
  28. 28.True or false: pressing a doorbell is a push. (a) True (b) False
  29. 29.True or false: hitting a cricket ball is a pull. (a) False (b) True
  30. 30.Which of these is caused by gravity? (a) brakes stop a bicycle (b) rain falls to the ground (c) rubbing hands warms them (d) a magnet picks up pins
  31. 31.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) gravity (c) unbalanced (d) balanced
  32. 32.💪 Which can a force NOT do? (a) start it moving (b) stop it moving (c) change its shape (d) change its colour
  33. 33.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  34. 34.💪 Which force is at work: pedalling a cycle? (a) friction (b) muscular force (c) magnetic force (d) gravity
  35. 35.💪 Which force pulls everything towards the Earth? (a) gravity (b) friction (c) magnetism (d) wind
  36. 36.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  37. 37.💪 Two children push a box to the right, one with 20 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  38. 38.💪 A cart is pulled to the right with 20 N and to the left with 25 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  39. 39.💪 Which force is at work: squeezing a lemon? (a) magnetic force (b) gravity (c) friction (d) muscular force
  40. 40.💪 A cart is pulled to the right with 45 N and to the left with 55 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left

Answer key

  1. 180
  2. a thrown ball comes down
  3. False
  4. 30
  5. False
  6. 110
  7. 60
  8. 55
  9. a pull
  10. a pull
  11. True
  12. False
  13. 410
  14. rubbing hands warms them
  15. 130
  16. a push
  17. a pull
  18. a compass needle turns
  19. a magnet picks up pins
  20. to the right
  21. False
  22. False
  23. to the left
  24. 170
  25. 15
  26. magnetic force
  27. 135
  28. True
  29. False
  30. rain falls to the ground
  31. balanced
  32. change its colour
  33. a push
  34. muscular force
  35. gravity
  36. a push
  37. 115
  38. to the left
  39. muscular force
  40. to the left

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