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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 115 · 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 river flows downhill (b) squeezing a lemon (c) rubbing hands warms them (d) a magnet picks up pins
  2. 2.True or false: hitting a cricket ball is a pull. (a) True (b) False
  3. 3.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  4. 4.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  5. 5.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
  6. 6.Which of these is caused by muscular force? (a) a magnet picks up pins (b) a thrown ball comes down (c) a compass needle turns (d) lifting a school bag
  7. 7.True or false: a tug of war is a pull. (a) False (b) True
  8. 8.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  9. 9.💪 Two children push a box to the right, one with 30 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  10. 10.💪 A box weighs 170 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  11. 11.💪 Two children push a box to the right, one with 85 N and the other with 45 N. What is the net (total) force on the box, in newtons?
  12. 12.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  13. 13.💪 A box weighs 480 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  14. 14.💪 A bag has a mass of 46 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  15. 15.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  16. 16.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  17. 17.True or false: pushing a trolley is a push. (a) False (b) True
  18. 18.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) unbalanced (c) doubled (d) balanced
  19. 19.True or false: pushing a trolley is a pull. (a) False (b) True
  20. 20.💪 A bag has a mass of 44 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  21. 21.💪 A cart is pulled to the right with 75 N and to the left with 85 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  22. 22.💪 A bag has a mass of 31 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  23. 23.True or false: plucking a mango is a pull. (a) False (b) True
  24. 24.Which of these is caused by muscular force? (a) squeezing a lemon (b) brakes stop a bicycle (c) shoes grip the floor (d) a river flows downhill
  25. 25.💪 A bag has a mass of 9 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  26. 26.💪 Which force is at work: rubbing hands warms them? (a) gravity (b) muscular force (c) magnetic force (d) friction
  27. 27.True or false: opening a drawer is a pull. (a) False (b) True
  28. 28.💪 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?
  29. 29.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  30. 30.Which of these is caused by friction? (a) a thrown ball comes down (b) shoes grip the floor (c) squeezing a lemon (d) pedalling a cycle
  31. 31.💪 Two children push a box to the right, one with 55 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  32. 32.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) gravity (d) magnetic force
  33. 33.Which of these is caused by gravity? (a) rubbing hands warms them (b) a thrown ball comes down (c) a compass needle turns (d) squeezing a lemon
  34. 34.💪 A bag has a mass of 24 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  35. 35.Which of these is caused by magnetic force? (a) a compass needle turns (b) rubbing hands warms them (c) shoes grip the floor (d) an apple falls down
  36. 36.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  37. 37.💪 Which force is at work: shoes grip the floor? (a) gravity (b) magnetic force (c) muscular force (d) friction
  38. 38.Which of these is caused by friction? (a) squeezing a lemon (b) a rolling ball slows (c) pedalling a cycle (d) a river flows downhill
  39. 39.💪 In which unit do we measure force? (a) second (s) (b) metre (m) (c) litre (L) (d) newton (N)
  40. 40.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) a thrown ball comes down (c) a river flows downhill (d) a magnet picks up pins

Answer key

  1. a river flows downhill
  2. False
  3. a pull
  4. a push
  5. 15
  6. lifting a school bag
  7. True
  8. a push
  9. 85
  10. 17
  11. 130
  12. a pull
  13. 48
  14. 460
  15. a push
  16. a pull
  17. True
  18. balanced
  19. False
  20. 440
  21. to the left
  22. 310
  23. True
  24. squeezing a lemon
  25. 90
  26. friction
  27. True
  28. 20
  29. a push
  30. shoes grip the floor
  31. 145
  32. muscular force
  33. a thrown ball comes down
  34. 240
  35. a compass needle turns
  36. a push
  37. friction
  38. a rolling ball slows
  39. newton (N)
  40. a magnet picks up pins

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