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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 830 · 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: drawing up a well bucket is a pull. (a) False (b) True
  2. 2.True or false: plucking a mango is a pull. (a) True (b) False
  3. 3.Which of these is caused by muscular force? (a) rubbing hands warms them (b) a river flows downhill (c) rain falls to the ground (d) pedalling a cycle
  4. 4.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  5. 5.Which of these is caused by friction? (a) pedalling a cycle (b) a magnet picks up pins (c) an apple falls down (d) a rolling ball slows
  6. 6.💪 A box weighs 140 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  7. 7.True or false: hitting a cricket ball is a push. (a) False (b) True
  8. 8.💪 In a tug of war, one team pulls right with 60 N and the other pulls left with 45 N. What is the size of the net force, in newtons?
  9. 9.💪 A bag has a mass of 45 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  10. 10.💪 Two children push a box to the right, one with 95 N and the other with 95 N. What is the net (total) force on the box, in newtons?
  11. 11.Which of these is caused by gravity? (a) shoes grip the floor (b) rubbing hands warms them (c) a rolling ball slows (d) an apple falls down
  12. 12.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
  13. 13.💪 Which can a force NOT do? (a) change its colour (b) change its shape (c) stop it moving (d) start it moving
  14. 14.💪 A cart is pulled to the right with 80 N and to the left with 90 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  15. 15.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  16. 16.💪 Is pulling up your socks a push or a pull? (a) a pull (b) a push
  17. 17.True or false: pulling a cart is a pull. (a) True (b) False
  18. 18.True or false: a tug of war is a pull. (a) True (b) False
  19. 19.Which of these is caused by muscular force? (a) rubbing hands warms them (b) a rolling ball slows (c) lifting a school bag (d) a magnet picks up pins
  20. 20.💪 Two children push a box to the right, one with 25 N and the other with 35 N. What is the net (total) force on the box, in newtons?
  21. 21.True or false: closing a drawer is a push. (a) False (b) True
  22. 22.Which of these is caused by gravity? (a) brakes stop a bicycle (b) a thrown ball comes down (c) a magnet picks up pins (d) a compass needle turns
  23. 23.Which of these is caused by friction? (a) rubbing hands warms them (b) a compass needle turns (c) a fridge magnet sticks (d) rain falls to the ground
  24. 24.💪 Two children push a box to the right, one with 20 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  25. 25.💪 Two children push a box to the right, one with 30 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  26. 26.💪 Which force is at work: a river flows downhill? (a) muscular force (b) gravity (c) magnetic force (d) friction
  27. 27.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) friction (c) muscular force (d) gravity
  28. 28.💪 In which unit do we measure force? (a) litre (L) (b) second (s) (c) newton (N) (d) metre (m)
  29. 29.💪 Two children push a box to the right, one with 40 N and the other with 80 N. What is the net (total) force on the box, in newtons?
  30. 30.💪 A cart is pulled to the right with 70 N and to the left with 60 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  31. 31.💪 In a tug of war, one team pulls left with 50 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  32. 32.Which of these is caused by gravity? (a) a magnet picks up pins (b) a compass needle turns (c) squeezing a lemon (d) a river flows downhill
  33. 33.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  34. 34.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  35. 35.💪 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?
  36. 36.💪 Which force is at work: a rolling ball slows? (a) gravity (b) friction (c) muscular force (d) magnetic force
  37. 37.💪 A cart is pulled to the right with 70 N and to the left with 80 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  38. 38.💪 Which force is at work: brakes stop a bicycle? (a) friction (b) muscular force (c) magnetic force (d) gravity
  39. 39.💪 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
  40. 40.💪 A box weighs 330 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?

Answer key

  1. True
  2. True
  3. pedalling a cycle
  4. 55
  5. a rolling ball slows
  6. 14
  7. True
  8. 15
  9. 450
  10. 190
  11. an apple falls down
  12. a push
  13. change its colour
  14. to the left
  15. a push
  16. a pull
  17. True
  18. True
  19. lifting a school bag
  20. 60
  21. True
  22. a thrown ball comes down
  23. rubbing hands warms them
  24. 105
  25. 80
  26. gravity
  27. gravity
  28. newton (N)
  29. 120
  30. to the right
  31. 45
  32. a river flows downhill
  33. a push
  34. a pull
  35. 130
  36. friction
  37. to the left
  38. friction
  39. to the right
  40. 33

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