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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 793 · 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 rolling ball slows? (a) friction (b) magnetic force (c) muscular force (d) gravity
  2. 2.Which of these is caused by gravity? (a) squeezing a lemon (b) an apple falls down (c) rubbing hands warms them (d) lifting a school bag
  3. 3.💪 A box weighs 230 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  4. 4.💪 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?
  5. 5.💪 A bag has a mass of 37 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  6. 6.💪 Two children push a box to the right, one with 95 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  7. 7.💪 Two equal forces push on a box from opposite sides. They are … (a) doubled (b) balanced (c) gravity (d) unbalanced
  8. 8.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) second (s) (d) metre (m)
  9. 9.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  10. 10.Which of these is caused by magnetic force? (a) a rolling ball slows (b) rain falls to the ground (c) pedalling a cycle (d) a fridge magnet sticks
  11. 11.True or false: pulling a cart is a pull. (a) True (b) False
  12. 12.💪 A cart is pulled to the right with 80 N and to the left with 65 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
  13. 13.Which of these is caused by friction? (a) an apple falls down (b) a thrown ball comes down (c) shoes grip the floor (d) a magnet picks up pins
  14. 14.💪 A box weighs 60 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  15. 15.💪 A box weighs 80 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  16. 16.💪 In a tug of war, one team pulls right with 15 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  17. 17.Which of these is caused by muscular force? (a) brakes stop a bicycle (b) a compass needle turns (c) rain falls to the ground (d) pedalling a cycle
  18. 18.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
  19. 19.💪 A force is a … (a) kind of colour (b) unit of time (c) type of sound (d) push or a pull
  20. 20.True or false: hitting a cricket ball is a pull. (a) True (b) False
  21. 21.True or false: pushing a trolley is a push. (a) True (b) False
  22. 22.💪 A box weighs 530 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  23. 23.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
  24. 24.💪 Which force is at work: a river flows downhill? (a) muscular force (b) magnetic force (c) gravity (d) friction
  25. 25.Which of these is caused by magnetic force? (a) a magnet picks up pins (b) a rolling ball slows (c) a river flows downhill (d) rain falls to the ground
  26. 26.💪 Two children push a box to the right, one with 35 N and the other with 50 N. What is the net (total) force on the box, in newtons?
  27. 27.💪 Two children push a box to the right, one with 50 N and the other with 20 N. What is the net (total) force on the box, in newtons?
  28. 28.💪 In a tug of war, one team pulls right with 95 N and the other pulls left with 80 N. What is the size of the net force, in newtons?
  29. 29.True or false: a tug of war is a push. (a) True (b) False
  30. 30.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  31. 31.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  32. 32.True or false: a tug of war is a pull. (a) True (b) False
  33. 33.💪 Which force is at work: rubbing hands warms them? (a) gravity (b) muscular force (c) magnetic force (d) friction
  34. 34.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 40 N. What is the size of the net force, in newtons?
  35. 35.Which of these is caused by gravity? (a) brakes stop a bicycle (b) pedalling a cycle (c) a rolling ball slows (d) a river flows downhill
  36. 36.💪 Which force is at work: a compass needle turns? (a) friction (b) magnetic force (c) gravity (d) muscular force
  37. 37.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
  38. 38.Which of these is caused by muscular force? (a) rain falls to the ground (b) lifting a school bag (c) rubbing hands warms them (d) a rolling ball slows
  39. 39.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  40. 40.💪 Which can a force NOT do? (a) start it moving (b) change its shape (c) change its colour (d) stop it moving

Answer key

  1. friction
  2. an apple falls down
  3. 23
  4. 5
  5. 370
  6. 180
  7. balanced
  8. newton (N)
  9. 40
  10. a fridge magnet sticks
  11. True
  12. to the right
  13. shoes grip the floor
  14. 6
  15. 8
  16. 10
  17. pedalling a cycle
  18. a push
  19. push or a pull
  20. False
  21. True
  22. 53
  23. a push
  24. gravity
  25. a magnet picks up pins
  26. 85
  27. 70
  28. 15
  29. False
  30. a push
  31. a push
  32. True
  33. friction
  34. 30
  35. a river flows downhill
  36. magnetic force
  37. a pull
  38. lifting a school bag
  39. a pull
  40. change its colour

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