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WorksheetsFriction
Total questions: 12
Worksheet time: 2mins
Complete the sentence. Friction always ____________
helps the motion
opposes the motion
both of these
none of these
Which one of these characteristics does a smooth surface has?
Less frictional force
More frictional force
Sometimes less and sometimes more force
All of above
Friction is a __________
Contact force
Non-contact force
Magnetic force
None of these
What kind of substances are known as lubricants?
Increase friction
Decrease friction
Increase or decrease friction
None of these
Fluid are____
Gases
Liquids
Gases and liquids both
None of these
Fluid are____
Gases
Liquids
Gases and liquids both
None of these
Rolling friction is smaller than?
Sliding friction
Static friction
Fluid friction
All of the above
Why are the wheels of vehicles made circular?
Rolling friction is less than sliding friction.
As they fit easily in cars
They have grip
None of the above
What is the direction of force of friction acting on a moving object?
Opposite to the direction of moving objects.
The same direction of the moving objects.
Both are correct
The frictional force exerted by fluids is called-
Rolling friction
Pull
Drag
Fluid Force
Can friction be entirely eliminated?
Yes, It can be
No, It can't be
The use of ball bearing makes the surface
(a)
