Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 779 · 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 force is at work: an apple falls down? (a) gravity (b) magnetic force (c) friction (d) muscular force
2. 2.True or false: hitting a cricket ball is a push. (a) True (b) False
3. 3.💪 A box weighs 170 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
4. 4.💪 A bag has a mass of 18 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
5. 5.💪 Two children push a box to the right, one with 15 N and the other with 50 N. What is the net (total) force on the box, in newtons?
6. 6.Which of these is caused by magnetic force? (a) an apple falls down (b) rubbing hands warms them (c) a fridge magnet sticks (d) squeezing a lemon
7. 7.💪 Two children push a box to the right, one with 95 N and the other with 100 N. What is the net (total) force on the box, in newtons?
8. 8.💪 Two children push a box to the right, one with 30 N and the other with 85 N. What is the net (total) force on the box, in newtons?
9. 9.True or false: opening a drawer is a push. (a) True (b) False
10. 10.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
11. 11.💪 Which force pulls everything towards the Earth? (a) wind (b) friction (c) magnetism (d) gravity
12. 12.Which of these is caused by friction? (a) lifting a school bag (b) brakes stop a bicycle (c) a magnet picks up pins (d) a thrown ball comes down
13. 13.💪 Which force is at work: lifting a school bag? (a) gravity (b) magnetic force (c) friction (d) muscular force
14. 14.Which of these is caused by gravity? (a) lifting a school bag (b) rain falls to the ground (c) squeezing a lemon (d) a fridge magnet sticks
15. 15.💪 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?
16. 16.True or false: plucking a mango is a push. (a) False (b) True
17. 17.💪 Which force is at work: a river flows downhill? (a) friction (b) magnetic force (c) muscular force (d) gravity
18. 18.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
19. 19.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
20. 20.True or false: pulling a cart is a pull. (a) True (b) False
21. 21.True or false: pushing a swing is a pull. (a) True (b) False
22. 22.Which of these is caused by gravity? (a) a river flows downhill (b) lifting a school bag (c) a magnet picks up pins (d) a fridge magnet sticks
23. 23.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) unbalanced (d) balanced
24. 24.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
25. 25.💪 A force is a … (a) push or a pull (b) type of sound (c) unit of time (d) kind of colour
26. 26.💪 A cart is pulled to the right with 90 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
27. 27.True or false: opening a drawer is a pull. (a) True (b) False
28. 28.💪 Which force is at work: brakes stop a bicycle? (a) muscular force (b) gravity (c) magnetic force (d) friction
29. 29.💪 A cart is pulled to the right with 90 N and to the left with 95 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
30. 30.💪 Two children push a box to the right, one with 35 N and the other with 70 N. What is the net (total) force on the box, in newtons?
31. 31.Which of these is caused by friction? (a) a rolling ball slows (b) rain falls to the ground (c) a river flows downhill (d) pedalling a cycle
32. 32.Which of these is caused by friction? (a) a fridge magnet sticks (b) lifting a school bag (c) rubbing hands warms them (d) a compass needle turns
33. 33.💪 In a tug of war, one team pulls left with 35 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
34. 34.💪 Which force is at work: a thrown ball comes down? (a) friction (b) gravity (c) magnetic force (d) muscular force
35. 35.💪 Is pushing a trolley a push or a pull? (a) a pull (b) a push
36. 36.💪 Is pushing a swing a push or a pull? (a) a push (b) a pull
37. 37.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
38. 38.💪 Two children push a box to the right, one with 45 N and the other with 35 N. What is the net (total) force on the box, in newtons?
39. 39.💪 A bag has a mass of 25 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
40. 40.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) muscular force (c) friction (d) gravity

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