Engineering Worksheet: Forces

Engineering lesson 9: Forces: push, pull and gravity · Set 585 · 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 left with 100 N and the other pulls right with 30 N. What is the size of the net force, in newtons?
2. 2.💪 A bag has a mass of 26 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
3. 3.💪 A cart is pulled to the right with 30 N and to the left with 20 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
4. 4.💪 A box weighs 260 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
5. 5.Which of these is caused by muscular force? (a) a rolling ball slows (b) a magnet picks up pins (c) pedalling a cycle (d) a river flows downhill
6. 6.Which of these is caused by muscular force? (a) an apple falls down (b) a river flows downhill (c) a thrown ball comes down (d) squeezing a lemon
7. 7.💪 In a tug of war, one team pulls left with 100 N and the other pulls right with 85 N. What is the size of the net force, in newtons?
8. 8.💪 Is pushing a swing a push or a pull? (a) a pull (b) a push
9. 9.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
10. 10.Which of these is caused by gravity? (a) a rolling ball slows (b) an apple falls down (c) rubbing hands warms them (d) a compass needle turns
11. 11.💪 In which unit do we measure force? (a) metre (m) (b) second (s) (c) newton (N) (d) litre (L)
12. 12.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
13. 13.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
14. 14.💪 Two children push a box to the right, one with 30 N and the other with 80 N. What is the net (total) force on the box, in newtons?
15. 15.💪 A bag has a mass of 37 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
16. 16.💪 Which can a force NOT do? (a) change its colour (b) start it moving (c) change its shape (d) stop it moving
17. 17.💪 Is closing a drawer a push or a pull? (a) a pull (b) a push
18. 18.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
19. 19.True or false: pressing a doorbell is a push. (a) True (b) False
20. 20.💪 A force is a … (a) kind of colour (b) unit of time (c) push or a pull (d) type of sound
21. 21.💪 In a tug of war, one team pulls left with 65 N and the other pulls right with 35 N. What is the size of the net force, in newtons?
22. 22.Which of these is caused by gravity? (a) rubbing hands warms them (b) a magnet picks up pins (c) rain falls to the ground (d) shoes grip the floor
23. 23.True or false: kicking a football is a push. (a) True (b) False
24. 24.True or false: pushing a trolley is a pull. (a) True (b) False
25. 25.💪 A cart is pulled to the right with 35 N and to the left with 25 N. Which way does the net force act? (a) to the right (b) to the left (c) no net force
26. 26.💪 A box weighs 350 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
27. 27.💪 Two children push a box to the right, one with 65 N and the other with 30 N. What is the net (total) force on the box, in newtons?
28. 28.💪 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?
29. 29.💪 Which force is at work: a compass needle turns? (a) muscular force (b) friction (c) gravity (d) magnetic force
30. 30.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) unbalanced (c) doubled (d) balanced
31. 31.True or false: pushing a swing is a push. (a) False (b) True
32. 32.💪 A box weighs 210 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
33. 33.💪 A cart is pulled to the right with 95 N and to the left with 105 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
34. 34.True or false: a tug of war is a push. (a) True (b) False
35. 35.True or false: plucking a mango is a push. (a) True (b) False
36. 36.Which of these is caused by friction? (a) a magnet picks up pins (b) a fridge magnet sticks (c) squeezing a lemon (d) shoes grip the floor
37. 37.💪 In a tug of war, one team pulls left with 95 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
38. 38.💪 A box weighs 540 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
39. 39.💪 Is kicking a football a push or a pull? (a) a pull (b) a push
40. 40.💪 Which force is at work: lifting a school bag? (a) friction (b) magnetic force (c) gravity (d) muscular force

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