Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 161 · 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 friction? (a) a rolling ball slows (b) a thrown ball comes down (c) lifting a school bag (d) rain falls to the ground
2. 2.True or false: closing a drawer is a push. (a) False (b) True
3. 3.Which of these is caused by magnetic force? (a) rubbing hands warms them (b) pedalling a cycle (c) a thrown ball comes down (d) a fridge magnet sticks
4. 4.💪 In a tug of war, one team pulls right with 50 N and the other pulls left with 5 N. What is the size of the net force, in newtons?
5. 5.True or false: plucking a mango is a pull. (a) True (b) False
6. 6.💪 Which force is at work: a magnet picks up pins? (a) magnetic force (b) friction (c) muscular force (d) gravity
7. 7.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
8. 8.💪 Which force is at work: squeezing a lemon? (a) friction (b) gravity (c) muscular force (d) magnetic force
9. 9.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
10. 10.True or false: plucking a mango is a push. (a) True (b) False
11. 11.Which of these is caused by muscular force? (a) rubbing hands warms them (b) a thrown ball comes down (c) shoes grip the floor (d) lifting a school bag
12. 12.💪 A box weighs 160 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
13. 13.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
14. 14.💪 Which force is at work: an apple falls down? (a) muscular force (b) magnetic force (c) friction (d) gravity
15. 15.💪 Which force is at work: a compass needle turns? (a) muscular force (b) magnetic force (c) gravity (d) friction
16. 16.True or false: opening a drawer is a pull. (a) True (b) False
17. 17.💪 A box weighs 120 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
18. 18.💪 Which force is at work: lifting a school bag? (a) friction (b) gravity (c) muscular force (d) magnetic force
19. 19.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) doubled (c) gravity (d) balanced
20. 20.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
21. 21.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) friction (c) magnetic force (d) gravity
22. 22.Which of these is caused by muscular force? (a) a thrown ball comes down (b) shoes grip the floor (c) a river flows downhill (d) pedalling a cycle
23. 23.Which of these is caused by magnetic force? (a) shoes grip the floor (b) a compass needle turns (c) pedalling a cycle (d) squeezing a lemon
24. 24.💪 Two children push a box to the right, one with 20 N and the other with 15 N. What is the net (total) force on the box, in newtons?
25. 25.Which of these is caused by gravity? (a) lifting a school bag (b) a compass needle turns (c) an apple falls down (d) a rolling ball slows
26. 26.💪 In a tug of war, one team pulls right with 30 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
27. 27.💪 Is hitting a cricket ball a push or a pull? (a) a push (b) a pull
28. 28.💪 Two children push a box to the right, one with 35 N and the other with 55 N. What is the net (total) force on the box, in newtons?
29. 29.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
30. 30.💪 In a tug of war, one team pulls left with 50 N and the other pulls right with 25 N. What is the size of the net force, in newtons?
31. 31.💪 In a tug of war, one team pulls left with 65 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
32. 32.💪 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?
33. 33.True or false: closing a drawer is a pull. (a) True (b) False
34. 34.💪 A bag has a mass of 7 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
35. 35.💪 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?
36. 36.True or false: pressing a doorbell is a pull. (a) False (b) True
37. 37.True or false: pulling a cart is a pull. (a) True (b) False
38. 38.💪 Which can a force NOT do? (a) change its shape (b) start it moving (c) change its colour (d) stop it moving
39. 39.💪 A cart is pulled to the right with 25 N and to the left with 30 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
40. 40.True or false: a tug of war is a push. (a) True (b) False

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