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.💪 A bag has a mass of 16 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 2.💪 Which force is at work: a fridge magnet sticks? (a) friction (b) gravity (c) muscular force (d) magnetic force
- 3.Which of these is caused by friction? (a) shoes grip the floor (b) an apple falls down (c) a thrown ball comes down (d) rain falls to the ground
- 4.💪 A box weighs 200 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 5.💪 A bag has a mass of 25 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 6.💪 Is pushing a trolley a push or a pull? (a) a push (b) a pull
- 7.True or false: drawing up a well bucket is a pull. (a) False (b) True
- 8.True or false: pushing a swing is a pull. (a) False (b) True
- 9.💪 Two children push a box to the right, one with 75 N and the other with 75 N. What is the net (total) force on the box, in newtons?
- 10.💪 A bag has a mass of 41 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 11.💪 A bag has a mass of 17 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 12.💪 A cart is pulled to the right with 50 N and to the left with 60 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
- 13.💪 Is pressing a doorbell a push or a pull? (a) a push (b) a pull
- 14.True or false: plucking a mango is a pull. (a) True (b) False
- 15.💪 In a tug of war, one team pulls left with 60 N and the other pulls right with 20 N. What is the size of the net force, in newtons?
- 16.💪 A bag has a mass of 9 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 17.Which of these is caused by muscular force? (a) a river flows downhill (b) rubbing hands warms them (c) a magnet picks up pins (d) squeezing a lemon
- 18.💪 A bag has a mass of 42 kg. Taking 1 kg to weigh about 10 N, what is its weight in newtons?
- 19.💪 Which force pulls everything towards the Earth? (a) wind (b) gravity (c) magnetism (d) friction
- 20.💪 A force is a … (a) kind of colour (b) type of sound (c) unit of time (d) push or a pull
- 21.💪 A box weighs 50 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 22.💪 Which force is at work: a thrown ball comes down? (a) friction (b) muscular force (c) gravity (d) magnetic force
- 23.💪 A box weighs 410 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 24.True or false: opening a drawer is a push. (a) True (b) False
- 25.💪 A cart is pulled to the right with 85 N and to the left with 90 N. Which way does the net force act? (a) to the left (b) no net force (c) to the right
- 26.💪 Is drawing up a well bucket a push or a pull? (a) a push (b) a pull
- 27.💪 A box weighs 360 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 28.💪 Is opening a drawer a push or a pull? (a) a push (b) a pull
- 29.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
- 30.💪 A box weighs 440 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 31.Which of these is caused by gravity? (a) shoes grip the floor (b) a river flows downhill (c) a fridge magnet sticks (d) lifting a school bag
- 32.💪 Two children push a box to the right, one with 45 N and the other with 90 N. What is the net (total) force on the box, in newtons?
- 33.Which of these is caused by muscular force? (a) pedalling a cycle (b) brakes stop a bicycle (c) an apple falls down (d) a river flows downhill
- 34.💪 Two equal forces push on a box from opposite sides. They are … (a) gravity (b) unbalanced (c) balanced (d) doubled
- 35.💪 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
- 36.True or false: pressing a doorbell is a pull. (a) False (b) True
- 37.💪 A box weighs 550 N. Taking 1 kg to weigh about 10 N, what is its mass in kilograms?
- 38.Which of these is caused by gravity? (a) lifting a school bag (b) rubbing hands warms them (c) a thrown ball comes down (d) a compass needle turns
- 39.💪 A cart is pulled to the right with 40 N and to the left with 35 N. Which way does the net force act? (a) to the right (b) no net force (c) to the left
- 40.💪 A cart is pulled to the right with 35 N and to the left with 45 N. Which way does the net force act? (a) to the left (b) to the right (c) no net force
Answer key
- 160
- magnetic force
- shoes grip the floor
- 20
- 250
- a push
- True
- False
- 150
- 410
- 170
- to the left
- a push
- True
- 40
- 90
- squeezing a lemon
- 420
- gravity
- push or a pull
- 5
- gravity
- 41
- False
- to the left
- a pull
- 36
- a pull
- a fridge magnet sticks
- 44
- a river flows downhill
- 135
- pedalling a cycle
- balanced
- to the left
- False
- 55
- a thrown ball comes down
- to the right
- to the left
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