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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 517 · 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 force is at work: a magnet picks up pins? (a) friction (b) magnetic force (c) muscular force (d) gravity
  2. 2.💪 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?
  3. 3.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  4. 4.💪 A force is a … (a) kind of colour (b) unit of time (c) type of sound (d) push or a pull
  5. 5.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 55 N. What is the size of the net force, in newtons?
  6. 6.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) change its colour (d) start it moving
  7. 7.Which of these is caused by friction? (a) rubbing hands warms them (b) a compass needle turns (c) a thrown ball comes down (d) an apple falls down
  8. 8.💪 In a tug of war, one team pulls left with 20 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
  9. 9.💪 Two children push a box to the right, one with 40 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  10. 10.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
  11. 11.True or false: pulling up your socks is a pull. (a) True (b) False
  12. 12.💪 A bag has a mass of 44 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  13. 13.💪 Two children push a box to the right, one with 40 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  14. 14.Which of these is caused by friction? (a) a fridge magnet sticks (b) an apple falls down (c) a rolling ball slows (d) a thrown ball comes down
  15. 15.💪 A cart is pulled to the right with 50 N and to the left with 65 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  16. 16.💪 Two children push a box to the right, one with 10 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  17. 17.💪 Two children push a box to the right, one with 10 N and the other with 15 N. What is the net (total) force on the box, in newtons?
  18. 18.💪 Which force is at work: a river flows downhill? (a) magnetic force (b) muscular force (c) friction (d) gravity
  19. 19.True or false: kicking a football is a pull. (a) False (b) True
  20. 20.True or false: plucking a mango is a push. (a) False (b) True
  21. 21.True or false: closing a drawer is a pull. (a) True (b) False
  22. 22.💪 Which force pulls everything towards the Earth? (a) friction (b) wind (c) magnetism (d) gravity
  23. 23.Which of these is caused by muscular force? (a) rain falls to the ground (b) an apple falls down (c) a magnet picks up pins (d) lifting a school bag
  24. 24.💪 A cart is pulled to the right with 100 N and to the left with 85 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  25. 25.Which of these is caused by gravity? (a) brakes stop a bicycle (b) squeezing a lemon (c) pedalling a cycle (d) a thrown ball comes down
  26. 26.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
  27. 27.Which of these is caused by gravity? (a) a compass needle turns (b) a river flows downhill (c) brakes stop a bicycle (d) lifting a school bag
  28. 28.💪 A cart is pulled to the right with 20 N and to the left with 10 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  29. 29.Which of these is caused by friction? (a) brakes stop a bicycle (b) squeezing a lemon (c) lifting a school bag (d) a magnet picks up pins
  30. 30.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
  31. 31.True or false: opening a drawer is a push. (a) False (b) True
  32. 32.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
  33. 33.True or false: pushing a trolley is a pull. (a) True (b) False
  34. 34.💪 Two children push a box to the right, one with 15 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  35. 35.💪 Which force is at work: pedalling a cycle? (a) magnetic force (b) gravity (c) muscular force (d) friction
  36. 36.💪 A box weighs 370 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  37. 37.Which of these is caused by magnetic force? (a) a fridge magnet sticks (b) pedalling a cycle (c) shoes grip the floor (d) an apple falls down
  38. 38.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) magnetic force (c) muscular force (d) gravity
  39. 39.💪 A cart is pulled to the right with 25 N and to the left with 10 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  40. 40.💪 Two children push a box to the right, one with 45 N and the other with 25 N. What is the net (total) force on the box, in newtons?

Answer key

  1. magnetic force
  2. 30
  3. a pull
  4. push or a pull
  5. 15
  6. change its colour
  7. rubbing hands warms them
  8. 5
  9. 55
  10. a push
  11. True
  12. 440
  13. 130
  14. a rolling ball slows
  15. to the left
  16. 60
  17. 25
  18. gravity
  19. False
  20. False
  21. False
  22. gravity
  23. lifting a school bag
  24. to the right
  25. a thrown ball comes down
  26. a push
  27. a river flows downhill
  28. to the right
  29. brakes stop a bicycle
  30. 15
  31. False
  32. newton (N)
  33. False
  34. 90
  35. muscular force
  36. 37
  37. a fridge magnet sticks
  38. magnetic force
  39. to the right
  40. 70

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