Engineering Worksheet: Forces
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.
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- 1.💪 Which force is at work: rain falls to the ground? (a) magnetic force (b) friction (c) muscular force (d) gravity
- 2.💪 In which unit do we measure force? (a) metre (m) (b) litre (L) (c) newton (N) (d) second (s)
- 3.💪 Two equal forces push on a box from opposite sides. They are … (a) balanced (b) doubled (c) unbalanced (d) gravity
- 4.True or false: kicking a football is a push. (a) True (b) False
- 5.💪 A cart is pulled to the right with 85 N and to the left with 95 N. Which way does the net force act? (a) no net force (b) to the right (c) to the left
- 6.💪 A box weighs 100 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 7.💪 A force is a … (a) kind of colour (b) type of sound (c) push or a pull (d) unit of time
- 8.💪 A bag has a mass of 19 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 9.Which of these is caused by muscular force? (a) squeezing a lemon (b) a magnet picks up pins (c) a rolling ball slows (d) rubbing hands warms them
- 10.True or false: pushing a trolley is a pull. (a) True (b) False
- 11.💪 Is kicking a football a push or a pull? (a) a push (b) a pull
- 12.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) change its colour (d) start it moving
- 13.💪 Is opening a drawer a push or a pull? (a) a pull (b) a push
- 14.💪 Which force is at work: pedalling a cycle? (a) friction (b) muscular force (c) gravity (d) magnetic force
- 15.True or false: pushing a swing is a push. (a) False (b) True
- 16.💪 A bag has a mass of 11 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 17.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
- 18.💪 Is pulling up your socks a push or a pull? (a) a push (b) a pull
- 19.💪 Which force is at work: rubbing hands warms them? (a) friction (b) magnetic force (c) muscular force (d) gravity
- 20.💪 Two children push a box to the right, one with 70 N and the other with 20 N. What is the net (total) force on the box, in newtons?
- 21.Which of these is caused by friction? (a) rain falls to the ground (b) an apple falls down (c) pedalling a cycle (d) a rolling ball slows
- 22.True or false: a tug of war is a push. (a) True (b) False
- 23.True or false: opening a drawer is a push. (a) True (b) False
- 24.💪 In a tug of war, one team pulls left with 20 N and the other pulls right with 15 N. What is the size of the net force, in newtons?
- 25.💪 Two children push a box to the right, one with 90 N and the other with 25 N. What is the net (total) force on the box, in newtons?
- 26.💪 A box weighs 450 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 27.💪 Which force is at work: a rolling ball slows? (a) magnetic force (b) gravity (c) friction (d) muscular force
- 28.💪 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?
- 29.💪 Is closing a drawer a push or a pull? (a) a push (b) a pull
- 30.True or false: drawing up a well bucket is a pull. (a) True (b) False
- 31.True or false: pushing a trolley is a push. (a) False (b) True
- 32.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
- 33.💪 A box weighs 160 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 34.True or false: plucking a mango is a push. (a) False (b) True
- 35.True or false: kicking a football is a pull. (a) False (b) True
- 36.💪 A bag has a mass of 2 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 37.💪 Two children push a box to the right, one with 15 N and the other with 80 N. What is the net (total) force on the box, in newtons?
- 38.💪 Two children push a box to the right, one with 65 N and the other with 55 N. What is the net (total) force on the box, in newtons?
- 39.💪 A cart is pulled to the right with 60 N and to the left with 65 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
- 40.💪 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) to the left (c) no net force
Answer key
- gravity
- newton (N)
- balanced
- True
- to the left
- 10
- push or a pull
- 190
- squeezing a lemon
- False
- a push
- change its colour
- a pull
- muscular force
- True
- 110
- a pull
- a pull
- friction
- 90
- a rolling ball slows
- False
- False
- 5
- 115
- 45
- friction
- 10
- a push
- True
- True
- a pull
- 16
- False
- False
- 20
- 95
- 120
- to the left
- to the right
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