Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 791 · 40 questions

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.

1. 1.Which of these is caused by muscular force? (a) a river flows downhill (b) lifting a school bag (c) a compass needle turns (d) rain falls to the ground
2. 2.💪 A cart is pulled to the right with 80 N and to the left with 70 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
3. 3.True or false: kicking a football is a push. (a) False (b) True
4. 4.💪 Two children push a box to the right, one with 70 N and the other with 90 N. What is the net (total) force on the box, in newtons?
5. 5.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) doubled (c) gravity (d) balanced
6. 6.True or false: a tug of war is a pull. (a) True (b) False
7. 7.💪 Which force is at work: a thrown ball comes down? (a) magnetic force (b) friction (c) gravity (d) muscular force
8. 8.💪 Which force is at work: rubbing hands warms them? (a) friction (b) magnetic force (c) gravity (d) muscular force
9. 9.True or false: pushing a swing is a pull. (a) True (b) False
10. 10.Which of these is caused by muscular force? (a) a compass needle turns (b) rain falls to the ground (c) pedalling a cycle (d) a thrown ball comes down
11. 11.💪 Two children push a box to the right, one with 15 N and the other with 15 N. What is the net (total) force on the box, in newtons?
12. 12.💪 Which force is at work: an apple falls down? (a) gravity (b) magnetic force (c) muscular force (d) friction
13. 13.💪 Is a tug of war a push or a pull? (a) a pull (b) a push
14. 14.💪 In a tug of war, one team pulls left with 70 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
15. 15.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
16. 16.True or false: pressing a doorbell is a push. (a) False (b) True
17. 17.💪 A bag has a mass of 52 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
18. 18.💪 In a tug of war, one team pulls left with 90 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
19. 19.💪 Which force is at work: a river flows downhill? (a) friction (b) muscular force (c) magnetic force (d) gravity
20. 20.💪 Is plucking a mango a push or a pull? (a) a push (b) a pull
21. 21.True or false: pressing a doorbell is a pull. (a) True (b) False
22. 22.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
23. 23.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) magnetic force (c) gravity (d) muscular force
24. 24.💪 Which force is at work: rain falls to the ground? (a) friction (b) gravity (c) magnetic force (d) muscular force
25. 25.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
26. 26.💪 Which can a force NOT do? (a) change its shape (b) start it moving (c) stop it moving (d) change its colour
27. 27.💪 A bag has a mass of 30 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
28. 28.💪 A cart is pulled to the right with 55 N and to the left with 45 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
29. 29.Which of these is caused by gravity? (a) lifting a school bag (b) an apple falls down (c) squeezing a lemon (d) a fridge magnet sticks
30. 30.💪 Which force pulls everything towards the Earth? (a) gravity (b) friction (c) magnetism (d) wind
31. 31.💪 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) no net force (c) to the left
32. 32.Which of these is caused by friction? (a) an apple falls down (b) lifting a school bag (c) rubbing hands warms them (d) a thrown ball comes down
33. 33.Which of these is caused by magnetic force? (a) a compass needle turns (b) rubbing hands warms them (c) a river flows downhill (d) a thrown ball comes down
34. 34.💪 Is drawing up a well bucket a push or a pull? (a) a pull (b) a push
35. 35.Which of these is caused by friction? (a) a river flows downhill (b) an apple falls down (c) brakes stop a bicycle (d) rain falls to the ground
36. 36.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
37. 37.💪 Two children push a box to the right, one with 100 N and the other with 15 N. What is the net (total) force on the box, in newtons?
38. 38.💪 Two children push a box to the right, one with 75 N and the other with 100 N. What is the net (total) force on the box, in newtons?
39. 39.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
40. 40.💪 A bag has a mass of 58 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?

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