Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 457 · 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.💪 In a tug of war, one team pulls right with 20 N and the other pulls left with 10 N. What is the size of the net force, in newtons?
2. 2.💪 Two equal forces push on a box from opposite sides. They are … (a) unbalanced (b) gravity (c) balanced (d) doubled
3. 3.True or false: a tug of war is a pull. (a) True (b) False
4. 4.💪 Two children push a box to the right, one with 10 N and the other with 55 N. What is the net (total) force on the box, in newtons?
5. 5.💪 A cart is pulled to the right with 35 N and to the left with 30 N. Which way does the net force act? (a) no net force (b) to the left (c) to the right
6. 6.True or false: hitting a cricket ball is a push. (a) True (b) False
7. 7.💪 A cart is pulled to the right with 40 N and to the left with 50 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
8. 8.True or false: opening a drawer is a push. (a) True (b) False
9. 9.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
10. 10.💪 A box weighs 160 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
11. 11.💪 A box weighs 290 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
12. 12.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 20 N. What is the size of the net force, in newtons?
13. 13.💪 Which force pulls everything towards the Earth? (a) friction (b) magnetism (c) wind (d) gravity
14. 14.Which of these is caused by muscular force? (a) a magnet picks up pins (b) pedalling a cycle (c) a fridge magnet sticks (d) a river flows downhill
15. 15.💪 In which unit do we measure force? (a) litre (L) (b) newton (N) (c) metre (m) (d) second (s)
16. 16.💪 A bag has a mass of 3 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
17. 17.Which of these is caused by muscular force? (a) squeezing a lemon (b) an apple falls down (c) a fridge magnet sticks (d) a magnet picks up pins
18. 18.💪 Which force is at work: rubbing hands warms them? (a) gravity (b) magnetic force (c) friction (d) muscular force
19. 19.Which of these is caused by friction? (a) a magnet picks up pins (b) a thrown ball comes down (c) squeezing a lemon (d) rubbing hands warms them
20. 20.💪 A force is a … (a) unit of time (b) push or a pull (c) kind of colour (d) type of sound
21. 21.Which of these is caused by gravity? (a) a rolling ball slows (b) a river flows downhill (c) pedalling a cycle (d) brakes stop a bicycle
22. 22.💪 Which force is at work: shoes grip the floor? (a) friction (b) muscular force (c) gravity (d) magnetic force
23. 23.True or false: plucking a mango is a pull. (a) False (b) True
24. 24.💪 Which force is at work: a magnet picks up pins? (a) muscular force (b) gravity (c) magnetic force (d) friction
25. 25.Which of these is caused by friction? (a) pedalling a cycle (b) rain falls to the ground (c) a compass needle turns (d) a rolling ball slows
26. 26.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
27. 27.True or false: kicking a football is a pull. (a) False (b) True
28. 28.True or false: pushing a trolley is a pull. (a) True (b) False
29. 29.💪 A box weighs 520 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
30. 30.💪 A box weighs 570 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
31. 31.True or false: closing a drawer is a push. (a) False (b) True
32. 32.Which of these is caused by muscular force? (a) rubbing hands warms them (b) rain falls to the ground (c) an apple falls down (d) lifting a school bag
33. 33.💪 Which force is at work: a river flows downhill? (a) magnetic force (b) gravity (c) friction (d) muscular force
34. 34.True or false: pulling up your socks is a pull. (a) False (b) True
35. 35.💪 Which force is at work: squeezing a lemon? (a) friction (b) muscular force (c) gravity (d) magnetic force
36. 36.💪 Which force is at work: pedalling a cycle? (a) gravity (b) friction (c) magnetic force (d) muscular force
37. 37.💪 Which force is at work: an apple falls down? (a) muscular force (b) gravity (c) friction (d) magnetic force
38. 38.💪 Two children push a box to the right, one with 15 N and the other with 40 N. What is the net (total) force on the box, in newtons?
39. 39.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
40. 40.True or false: hitting a cricket ball is a pull. (a) True (b) False

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