FRICTION CLASS 8

friction is a _________ force

• Non contact

• Contact

• magnetic

• electrostatic

Tags

NGSS.MS-PS2-2

Friction always

• Helps in motion

• Opposes motion

• Both of these

• None of these

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

What type of friction is it when the object doesnot move even when external force is applied on it?

• static

• sliding

• fluid

• rolling

The maximum value of the force of static friction is________

• force

• limiting friction

• rolling friction

• no friction

Static friction is a __________ force.

• Self adjusting

• adjusting others

• non adjusting

• free

If the limiting force of friction of a wooden block is 50 N, the box start to slide when external force applied is of

• 30 N

• 50 N

• 49 N

• 51 N

Tags

NGSS.MS-PS2-2

A force of friction which balances the applied force during the stationary state of a body is called _________

• force

• Sliding friction

• Static friction

• Rolling friction

Sliding friction is _________ than the static friction

• less

• more

• equal

• zero