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10Friction is an opposing force.
Friction acts between two surfaces in contact.
Smooth surfaces produce more friction than rough surfaces.
Wet surfaces produce less friction than dry surfaces.
Rolling objects produce more friction than non-rolling objects.
Friction opposes the motion of a moving body.
All surfaces are perfectly smooth.
Friction is produced due to interlocking of projections.
Friction helps in motion.
Friction acts only when an object is moving.
Percentage: 0%
Friction is a type of:
More friction is produced between:
Less friction is produced on:
Friction occurs due to:
Which surface produces least friction?
Friction acts in which direction?
Which object produces less friction?
Projections on surfaces are:
Depressions on surfaces are:
Friction is useful because it:
The opposing force between two surfaces is called ______.
Friction acts in the ______ direction of motion.
Dry surfaces produce ______ friction.
Wet surfaces produce ______ friction.
Rolling surfaces produce ______ friction.
Rough surfaces have more ______.
Smooth surfaces also have fine ______.
Raised structures on surface are called ______.
Pressed structures on surface are called ______.
Friction is caused due to ______ of surface projections.