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Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 2 · 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.

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  1. 1.💪 Two children push a box to the right, one with 65 N and the other with 85 N. What is the net (total) force on the box, in newtons?
  2. 2.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) start it moving (d) change its colour
  3. 3.💪 Two children push a box to the right, one with 25 N and the other with 60 N. What is the net (total) force on the box, in newtons?
  4. 4.💪 A bag has a mass of 57 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  5. 5.True or false: opening a drawer is a pull. (a) False (b) True
  6. 6.💪 Which force pulls everything towards the Earth? (a) friction (b) wind (c) magnetism (d) gravity
  7. 7.💪 Two children push a box to the right, one with 65 N and the other with 10 N. What is the net (total) force on the box, in newtons?
  8. 8.Which of these is caused by gravity? (a) brakes stop a bicycle (b) rubbing hands warms them (c) an apple falls down (d) a magnet picks up pins
  9. 9.💪 A box weighs 130 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  10. 10.💪 A cart is pulled to the right with 100 N and to the left with 90 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
  11. 11.True or false: a tug of war is a push. (a) False (b) True
  12. 12.💪 Which force is at work: an apple falls down? (a) gravity (b) magnetic force (c) friction (d) muscular force
  13. 13.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
  14. 14.Which of these is caused by gravity? (a) rubbing hands warms them (b) lifting a school bag (c) a thrown ball comes down (d) shoes grip the floor
  15. 15.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) gravity (c) magnetic force (d) friction
  16. 16.💪 Two children push a box to the right, one with 20 N and the other with 75 N. What is the net (total) force on the box, in newtons?
  17. 17.Which of these is caused by friction? (a) a thrown ball comes down (b) a magnet picks up pins (c) rubbing hands warms them (d) pedalling a cycle
  18. 18.💪 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
  19. 19.💪 Two children push a box to the right, one with 45 N and the other with 90 N. What is the net (total) force on the box, in newtons?
  20. 20.Which of these is caused by magnetic force? (a) shoes grip the floor (b) a magnet picks up pins (c) rubbing hands warms them (d) a rolling ball slows
  21. 21.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
  22. 22.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  23. 23.Which of these is caused by magnetic force? (a) a fridge magnet sticks (b) a thrown ball comes down (c) squeezing a lemon (d) rain falls to the ground
  24. 24.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
  25. 25.💪 A bag has a mass of 50 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
  26. 26.💪 A box weighs 110 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  27. 27.💪 Which force is at work: rubbing hands warms them? (a) muscular force (b) friction (c) magnetic force (d) gravity
  28. 28.True or false: kicking a football is a push. (a) False (b) True
  29. 29.💪 A cart is pulled to the right with 20 N and to the left with 5 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
  30. 30.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) doubled (c) unbalanced (d) gravity
  31. 31.True or false: hitting a cricket ball is a push. (a) True (b) False
  32. 32.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
  33. 33.True or false: opening a drawer is a push. (a) False (b) True
  34. 34.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
  35. 35.True or false: pushing a swing is a push. (a) False (b) True
  36. 36.True or false: pushing a trolley is a pull. (a) False (b) True
  37. 37.💪 In a tug of war, one team pulls right with 10 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
  38. 38.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
  39. 39.💪 Which force is at work: a river flows downhill? (a) magnetic force (b) friction (c) muscular force (d) gravity
  40. 40.💪 Is pulling a cart a push or a pull? (a) a push (b) a pull

Answer key

  1. 150
  2. change its colour
  3. 85
  4. 570
  5. True
  6. gravity
  7. 75
  8. an apple falls down
  9. 13
  10. to the right
  11. False
  12. gravity
  13. a push
  14. a thrown ball comes down
  15. gravity
  16. 95
  17. rubbing hands warms them
  18. to the left
  19. 135
  20. a magnet picks up pins
  21. a pull
  22. 170
  23. a fridge magnet sticks
  24. a push
  25. 500
  26. 11
  27. friction
  28. True
  29. to the right
  30. balanced
  31. True
  32. 12
  33. False
  34. a push
  35. True
  36. False
  37. 5
  38. a push
  39. gravity
  40. a pull

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