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WorksheetsIB SEHS Topic 10 Friction and Drag
Total questions: 19
Worksheet time: 10mins
Which opposing force reduces the motion parallel to the interface of two surfaces in contact?
Friction
Newton's third law
Normal reaction force
Lift force
Which has the lowest coefficient of friction?
A football boot turning on wet grass
A bike tyre rolling on a road
A beach volleyball bouncing on sand
A downhill ski moving on snow
Which pair represents the force of friction and normal reaction force in the diagram below?
Friction: S
Reaction Force: T
Friction: T
Reaction Force: U
Friction: U
Reaction Force: T
Friction: V
Reaction Force: U
Identify the forces in the picture
A: Friction
B: Gravity
A: Applied Force
B: Gravity
A: Drag
B: Reaction Force
A: Friction
B: Applied Force
Which of these best defines drag?
The force(s) acting to oppose the motion of an object through a fluid medium such as air or water
The force(s) acting upon a solid as it moves through air
The force(s) acting to slow the movement of an object
The force(s) acting at the surface of a solid in contact with a fluid medium such as air or water
"As a body pushes against a fluid, the fluid pushes back"
Which of the following does this best describe?
Wave Drag
Form Drag
Surface Drag
Newton's third law
A swimmer wishes to decrease the amount of surface drag acting on them as they swim. Which of the following would best achieve that?
Wearing a swim cap and smooth body suit
Swimming in a streamlined position
Remaining underwater for longer periods
Using lane ropes
The coefficient of static friction is typically...
half of the coefficient of dynamic friction
greater than the coefficient of dynamic friction
less than the coefficient of dynamic friction
equal to the coefficient of dynamic friction
The coefficient of friction is calculated by...
Dividing Frictional force (F) by Applied Force
Dividing Frictional force (F) by normal force (N)
Dividing Normal force (N) by frictional force (F)
Dividing Frictional Force (F) by weight (kg)
Which best describes what causes friction?
A change in pressure caused by opposing forces
The movement of a fluid over a solid surface
Irregularities in surfaces at a microscopic level
The reaction of two surfaces in contact
Which is caused when the surface of a body catches a layer of fluid nearby?
Friction
Form drag
Wave drag
Surface drag
A downhill skiier waxes their skis to increase their speed. Which of the following are they trying to do?
Reduce the amount of form drag acting upon them
Reduce the amount of surface drag acting upon them
Reduce the coefficient of friction between their ski and the snow
Reduce the coefficient of friction between their body and the air
A cycling team races in formation in order to...
Prevent wave drag from acting upon them
Reduce the amount of form drag acting upon them
Reduce the amount of surface drag acting upon them
Increase the amount of friction acting between tyre and road
In which of the following situations would the total amount of drag be greatest?
larger rough object moving quickly through water
smaller smooth object moving slowly through air
larger smooth object moving quickly through water
larger rough object moving quickly through air
Which of the following will increase friction between a rugby player and the grass field by the greatest amount?
Wearing shoes with rubber soles
Wearing shoes with studs
Ensuring the grass is dry
Ensuring the grass is wet
Which of the following is most likely to have the effect of increasing the amount of drag on an object as it moves through water?
Decreasing the frontal surface area of the object
Increasing the velocity that the object travels at
Moving the object through air instead
Increasing the surface area of the object
Identify the force labelled A
Body weight/gravity
Air resistance
Friction
Ground reaction force
Identify the force labelled B
Gravity
Air resistance/drag
Ground reaction force
Friction
Identify the force labelled C
Applied force
Ground reaction force
Air resistance/drag
Friction
