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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 645 · 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 15 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  2. 2.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
  3. 3.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
  4. 4.💪 In a tug of war, one team pulls left with 35 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
  5. 5.💪 Which force is at work: a compass needle turns? (a) muscular force (b) gravity (c) magnetic force (d) friction
  6. 6.Which of these is caused by friction? (a) brakes stop a bicycle (b) a thrown ball comes down (c) a river flows downhill (d) rain falls to the ground
  7. 7.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) doubled (c) gravity (d) unbalanced
  8. 8.💪 A bag has a mass of 4 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  9. 9.Which of these is caused by muscular force? (a) a river flows downhill (b) a fridge magnet sticks (c) squeezing a lemon (d) rain falls to the ground
  10. 10.💪 Which can a force NOT do? (a) start it moving (b) change its colour (c) change its shape (d) stop it moving
  11. 11.True or false: pushing a swing is a push. (a) False (b) True
  12. 12.💪 Which force is at work: a magnet picks up pins? (a) muscular force (b) magnetic force (c) friction (d) gravity
  13. 13.Which of these is caused by gravity? (a) a fridge magnet sticks (b) squeezing a lemon (c) a magnet picks up pins (d) rain falls to the ground
  14. 14.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  15. 15.True or false: plucking a mango is a pull. (a) False (b) True
  16. 16.Which of these is caused by gravity? (a) a magnet picks up pins (b) a river flows downhill (c) lifting a school bag (d) a rolling ball slows
  17. 17.💪 A cart is pulled to the right with 35 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
  18. 18.True or false: closing a drawer is a pull. (a) False (b) True
  19. 19.💪 A cart is pulled to the right with 60 N and to the left with 55 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  20. 20.💪 In a tug of war, one team pulls left with 75 N and the other pulls right with 60 N. What is the size of the net force, in newtons?
  21. 21.True or false: hitting a cricket ball is a push. (a) True (b) False
  22. 22.Which of these is caused by muscular force? (a) a compass needle turns (b) a thrown ball comes down (c) lifting a school bag (d) rubbing hands warms them
  23. 23.💪 Two children push a box to the right, one with 20 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  24. 24.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 Which force is at work: squeezing a lemon? (a) gravity (b) friction (c) magnetic force (d) muscular force
  26. 26.True or false: kicking a football is a push. (a) True (b) False
  27. 27.💪 Two children push a box to the right, one with 35 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  28. 28.💪 Two children push a box to the right, one with 30 N and the other with 40 N. What is the net (total) force on the box, in newtons?
  29. 29.💪 Two children push a box to the right, one with 55 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  30. 30.💪 In which unit do we measure force? (a) second (s) (b) litre (L) (c) newton (N) (d) metre (m)
  31. 31.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) magnetic force (c) gravity (d) friction
  32. 32.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) a rolling ball slows (c) an apple falls down (d) a thrown ball comes down
  33. 33.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
  34. 34.Which of these is caused by muscular force? (a) a river flows downhill (b) pedalling a cycle (c) rain falls to the ground (d) a fridge magnet sticks
  35. 35.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  36. 36.True or false: closing a drawer is a push. (a) True (b) False
  37. 37.💪 Two children push a box to the right, one with 25 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  38. 38.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
  39. 39.💪 Which force is at work: a river flows downhill? (a) muscular force (b) magnetic force (c) friction (d) gravity
  40. 40.True or false: pressing a doorbell is a push. (a) False (b) True

Answer key

  1. 30
  2. a pull
  3. a push
  4. 25
  5. magnetic force
  6. brakes stop a bicycle
  7. balanced
  8. 40
  9. squeezing a lemon
  10. change its colour
  11. True
  12. magnetic force
  13. rain falls to the ground
  14. a pull
  15. True
  16. a river flows downhill
  17. to the right
  18. False
  19. to the right
  20. 15
  21. True
  22. lifting a school bag
  23. 60
  24. 45
  25. muscular force
  26. True
  27. 125
  28. 70
  29. 150
  30. newton (N)
  31. friction
  32. a magnet picks up pins
  33. a pull
  34. pedalling a cycle
  35. a push
  36. True
  37. 45
  38. a thrown ball comes down
  39. gravity
  40. True

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