Friction CBSE 85

Sports men especially footballer's use spiked shoes to ______friction

• Increase

• Decrease

• Keep constant

• None

When the applied force more than the limit of________friction the body starts to moves

• sliding

• fluid

• rolling

• static

Friction is independent of__________

• roughness of surface

• normal force

• area of contact

• all of them

The frictional force exerted by fluids is also called as_______

• Rolling friction

• sliding friction

• static friction

• drag

It is always________to roll a body than to slide it over a surface

• difficult

• easier

• hard

• tough

A force that opposes motion between any surfaces that are in contact.

• gravity

• acceleration

• friction

• direction

Which type of friction is shown in the picture?

• rolling

• fluid

• static

• sliding

Which type of friction is shown in the picture?

• fluid

• static

• rolling

• sliding

Tags

NGSS.HS-PS2-1

If the following objects were dropped from the same height, which one would hit the floor first?

• 
• 
• 

Tags

NGSS.MS-PS2-2

Which type of friction is shown in the picture?

• rolling

• static

• fluid

• sliding