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.💪 In which unit do we measure force? (a) newton (N) (b) litre (L) (c) metre (m) (d) second (s)
- 2.💪 A box weighs 220 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 3.💪 Is hitting a cricket ball a push or a pull? (a) a pull (b) a push
- 4.💪 Which force is at work: lifting a school bag? (a) friction (b) gravity (c) muscular force (d) magnetic force
- 5.True or false: closing a drawer is a pull. (a) True (b) False
- 6.💪 Is pressing a doorbell a push or a pull? (a) a pull (b) a push
- 7.True or false: pushing a trolley is a push. (a) False (b) True
- 8.💪 Which force is at work: a thrown ball comes down? (a) gravity (b) friction (c) magnetic force (d) muscular force
- 9.Which of these is caused by gravity? (a) a rolling ball slows (b) a compass needle turns (c) rain falls to the ground (d) pedalling a cycle
- 10.Which of these is caused by friction? (a) pedalling a cycle (b) a compass needle turns (c) a rolling ball slows (d) a river flows downhill
- 11.Which of these is caused by magnetic force? (a) pedalling a cycle (b) rubbing hands warms them (c) lifting a school bag (d) a compass needle turns
- 12.True or false: plucking a mango is a push. (a) True (b) False
- 13.💪 A box weighs 60 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 14.True or false: drawing up a well bucket is a push. (a) False (b) True
- 15.💪 Is plucking a mango a push or a pull? (a) a pull (b) a push
- 16.💪 In a tug of war, one team pulls right with 70 N and the other pulls left with 50 N. What is the size of the net force, in newtons?
- 17.True or false: pulling up your socks is a push. (a) False (b) True
- 18.💪 A bag has a mass of 36 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 19.💪 Which can a force NOT do? (a) change its shape (b) stop it moving (c) start it moving (d) change its colour
- 20.💪 Is a tug of war a push or a pull? (a) a push (b) a pull
- 21.💪 A box weighs 560 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 22.💪 A bag has a mass of 60 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 23.True or false: drawing up a well bucket is a pull. (a) True (b) False
- 24.💪 Two children push a box to the right, one with 30 N and the other with 10 N. What is the net (total) force on the box, in newtons?
- 25.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) doubled (c) balanced (d) unbalanced
- 26.💪 In a tug of war, one team pulls right with 55 N and the other pulls left with 25 N. What is the size of the net force, in newtons?
- 27.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 5 N. What is the size of the net force, in newtons?
- 28.💪 Two children push a box to the right, one with 80 N and the other with 50 N. What is the net (total) force on the box, in newtons?
- 29.💪 Two children push a box to the right, one with 25 N and the other with 10 N. What is the net (total) force on the box, in newtons?
- 30.Which of these is caused by magnetic force? (a) rain falls to the ground (b) lifting a school bag (c) rubbing hands warms them (d) a magnet picks up pins
- 31.💪 A cart is pulled to the right with 45 N and to the left with 55 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
- 32.💪 Which force is at work: shoes grip the floor? (a) gravity (b) friction (c) muscular force (d) magnetic force
- 33.💪 Two children push a box to the right, one with 60 N and the other with 95 N. What is the net (total) force on the box, in newtons?
- 34.💪 Two children push a box to the right, one with 90 N and the other with 30 N. What is the net (total) force on the box, in newtons?
- 35.💪 In a tug of war, one team pulls right with 35 N and the other pulls left with 30 N. What is the size of the net force, in newtons?
- 36.💪 Is pulling a cart a push or a pull? (a) a pull (b) a push
- 37.True or false: pressing a doorbell is a pull. (a) False (b) True
- 38.💪 Which force is at work: rain falls to the ground? (a) muscular force (b) gravity (c) friction (d) magnetic force
- 39.Which of these is caused by gravity? (a) a thrown ball comes down (b) a compass needle turns (c) lifting a school bag (d) a magnet picks up pins
- 40.💪 In a tug of war, one team pulls left with 25 N and the other pulls right with 10 N. What is the size of the net force, in newtons?
Answer key
- newton (N)
- 22
- a push
- muscular force
- False
- a push
- True
- gravity
- rain falls to the ground
- a rolling ball slows
- a compass needle turns
- False
- 6
- False
- a pull
- 20
- False
- 360
- change its colour
- a pull
- 56
- 600
- True
- 40
- balanced
- 30
- 20
- 130
- 35
- a magnet picks up pins
- to the left
- friction
- 155
- 120
- 5
- a pull
- False
- gravity
- a thrown ball comes down
- 15
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