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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 171 · 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.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  2. 2.Which of these is caused by magnetic force? (a) brakes stop a bicycle (b) a river flows downhill (c) a magnet picks up pins (d) a thrown ball comes down
  3. 3.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) lifting a school bag (c) a fridge magnet sticks (d) shoes grip the floor
  4. 4.💪 Which force is at work: an apple falls down? (a) friction (b) muscular force (c) magnetic force (d) gravity
  5. 5.💪 In which unit do we measure force? (a) metre (m) (b) newton (N) (c) litre (L) (d) second (s)
  6. 6.💪 In a tug of war, one team pulls left with 35 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
  7. 7.💪 Which force pulls everything towards the Earth? (a) friction (b) gravity (c) wind (d) magnetism
  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 gravity? (a) brakes stop a bicycle (b) squeezing a lemon (c) shoes grip the floor (d) a thrown ball comes down
  10. 10.💪 Which force is at work: a river flows downhill? (a) muscular force (b) magnetic force (c) friction (d) gravity
  11. 11.True or false: drawing up a well bucket is a push. (a) False (b) True
  12. 12.💪 Which force is at work: rubbing hands warms them? (a) magnetic force (b) friction (c) gravity (d) muscular force
  13. 13.Which of these is caused by gravity? (a) squeezing a lemon (b) rain falls to the ground (c) a fridge magnet sticks (d) rubbing hands warms them
  14. 14.True or false: a tug of war is a pull. (a) True (b) False
  15. 15.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
  16. 16.True or false: hitting a cricket ball is a push. (a) True (b) False
  17. 17.💪 A force is a … (a) type of sound (b) unit of time (c) push or a pull (d) kind of colour
  18. 18.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
  19. 19.True or false: pushing a trolley is a pull. (a) False (b) True
  20. 20.💪 In a tug of war, one team pulls right with 90 N and the other pulls left with 55 N. What is the size of the net force, in newtons?
  21. 21.💪 A cart is pulled to the right with 45 N and to the left with 35 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
  22. 22.💪 A bag has a mass of 27 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  23. 23.💪 A cart is pulled to the right with 65 N and to the left with 75 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
  24. 24.💪 A box weighs 180 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  25. 25.💪 A bag has a mass of 25 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  26. 26.💪 Two children push a box to the right, one with 70 N and the other with 25 N. What is the net (total) force on the box, in newtons?
  27. 27.💪 A cart is pulled to the right with 75 N and to the left with 75 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  28. 28.Which of these is caused by muscular force? (a) a compass needle turns (b) a fridge magnet sticks (c) squeezing a lemon (d) brakes stop a bicycle
  29. 29.Which of these is caused by friction? (a) rain falls to the ground (b) rubbing hands warms them (c) a river flows downhill (d) squeezing a lemon
  30. 30.True or false: pulling up your socks is a push. (a) False (b) True
  31. 31.💪 In a tug of war, one team pulls left with 30 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
  32. 32.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull
  33. 33.Which of these is caused by gravity? (a) an apple falls down (b) pedalling a cycle (c) a compass needle turns (d) lifting a school bag
  34. 34.Which of these is caused by muscular force? (a) an apple falls down (b) lifting a school bag (c) brakes stop a bicycle (d) a river flows downhill
  35. 35.💪 Which can a force NOT do? (a) start it moving (b) change its shape (c) stop it moving (d) change its colour
  36. 36.💪 A bag has a mass of 48 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  37. 37.True or false: plucking a mango is a push. (a) False (b) True
  38. 38.💪 Two children push a box to the right, one with 60 N and the other with 55 N. What is the net (total) force on the box, in newtons?
  39. 39.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 15 N. What is the size of the net force, in newtons?
  40. 40.True or false: kicking a football is a push. (a) False (b) True

Answer key

  1. a push
  2. a magnet picks up pins
  3. a fridge magnet sticks
  4. gravity
  5. newton (N)
  6. 30
  7. gravity
  8. 40
  9. a thrown ball comes down
  10. gravity
  11. False
  12. friction
  13. rain falls to the ground
  14. True
  15. a pull
  16. True
  17. push or a pull
  18. a pull
  19. False
  20. 35
  21. to the right
  22. 270
  23. to the left
  24. 18
  25. 250
  26. 95
  27. no net force
  28. squeezing a lemon
  29. rubbing hands warms them
  30. False
  31. 5
  32. a pull
  33. an apple falls down
  34. lifting a school bag
  35. change its colour
  36. 480
  37. False
  38. 115
  39. 5
  40. True

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