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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 989 · 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.True or false: pressing a doorbell is a push. (a) False (b) True
  2. 2.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) muscular force (c) gravity (d) magnetic force
  3. 3.💪 A cart is pulled to the right with 85 N and to the left with 100 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  4. 4.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  5. 5.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  6. 6.💪 Two children push a box to the right, one with 85 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  7. 7.Which of these is caused by muscular force? (a) a compass needle turns (b) pedalling a cycle (c) a thrown ball comes down (d) rain falls to the ground
  8. 8.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) balanced (c) gravity (d) doubled
  9. 9.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
  10. 10.💪 Which force pulls everything towards the Earth? (a) magnetism (b) wind (c) gravity (d) friction
  11. 11.Which of these is caused by muscular force? (a) rubbing hands warms them (b) brakes stop a bicycle (c) a magnet picks up pins (d) lifting a school bag
  12. 12.True or false: hitting a cricket ball is a push. (a) False (b) True
  13. 13.💪 In which unit do we measure force? (a) metre (m) (b) litre (L) (c) second (s) (d) newton (N)
  14. 14.💪 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
  15. 15.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) gravity (c) friction (d) magnetic force
  16. 16.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  17. 17.💪 Two children push a box to the right, one with 80 N and the other with 65 N. What is the net (total) force on the box, in newtons?
  18. 18.True or false: plucking a mango is a push. (a) True (b) False
  19. 19.True or false: opening a drawer is a push. (a) False (b) True
  20. 20.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
  21. 21.Which of these is caused by muscular force? (a) squeezing a lemon (b) a thrown ball comes down (c) a magnet picks up pins (d) a rolling ball slows
  22. 22.True or false: pushing a trolley is a pull. (a) False (b) True
  23. 23.💪 Which can a force NOT do? (a) start it moving (b) change its shape (c) change its colour (d) stop it moving
  24. 24.Which of these is caused by magnetic force? (a) an apple falls down (b) rain falls to the ground (c) a thrown ball comes down (d) a magnet picks up pins
  25. 25.True or false: pressing a doorbell is a pull. (a) True (b) False
  26. 26.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  27. 27.Which of these is caused by friction? (a) a magnet picks up pins (b) a river flows downhill (c) shoes grip the floor (d) pedalling a cycle
  28. 28.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  29. 29.💪 A bag has a mass of 48 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  30. 30.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) friction (c) muscular force (d) gravity
  31. 31.Which of these is caused by gravity? (a) a magnet picks up pins (b) lifting a school bag (c) a compass needle turns (d) a thrown ball comes down
  32. 32.True or false: kicking a football is a pull. (a) True (b) False
  33. 33.Which of these is caused by gravity? (a) squeezing a lemon (b) brakes stop a bicycle (c) an apple falls down (d) lifting a school bag
  34. 34.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  35. 35.💪 Two children push a box to the right, one with 35 N and the other with 70 N. What is the net (total) force on the box, in newtons?
  36. 36.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) friction (c) muscular force (d) gravity
  37. 37.💪 In a tug of war, one team pulls right with 25 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
  38. 38.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
  39. 39.💪 Two children push a box to the right, one with 80 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  40. 40.💪 In a tug of war, one team pulls right with 65 N and the other pulls left with 15 N. What is the size of the net force, in newtons?

Answer key

  1. True
  2. magnetic force
  3. to the left
  4. 55
  5. 30
  6. 160
  7. pedalling a cycle
  8. balanced
  9. a push
  10. gravity
  11. lifting a school bag
  12. True
  13. newton (N)
  14. to the right
  15. friction
  16. a push
  17. 145
  18. False
  19. False
  20. 10
  21. squeezing a lemon
  22. False
  23. change its colour
  24. a magnet picks up pins
  25. False
  26. a pull
  27. shoes grip the floor
  28. a push
  29. 480
  30. muscular force
  31. a thrown ball comes down
  32. False
  33. an apple falls down
  34. a pull
  35. 105
  36. gravity
  37. 15
  38. a push
  39. 100
  40. 50

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