Question

Fill in the blanks!
than the sliding friction.
1.
friction.
Bullet trains have
bodies.
the rolling friction.
5.
to the direction of motion of the object.
friction, while smooth surfaces have
surfaces exert greater friction than liquids and gases.
7. Rough surfaces have
friction.
Rolling friction is less than
We make grooves in the tyres of bicycles to
The wheels of trains are made up of steel to
The frictional force exerted by fluids is called
6. The direction of friction is always​

Answer 1

Answer:

Explanation:

Sliding friction is greater than rolling friction.

Rolling friction is the resistance to motion experienced by a body when it rolls upon another. It is much less than sliding friction for same pair of bodies. When one body rolls upon another, there is theoretically no sliding or slip between them. And if both are perfectly rigid, there is no surface of contact. If there is no surface contact then the friction is very less.