friction as a force

Friction acts at the point of ___________________________.

• contact

• rest

• none of the above

What makes it easier to slide a heavy box across the floor ?

• powder

• grease

• oil

• all of the above

Tags

NGSS.MS-PS2-2

Friction makes it possible for a car to stop.

• true

• false

Define Friction.

• It is the force that acts when two or more objects come in contact together.

• It is the force that pulls everything towards the Centre of the Earth.

• It is the force that exert force while doing work.

• none of the above.

You use powder on carrom board to ___________________.

• increase friction

• decrease friction

• generate heat

• all of the above.

Friction causes no damage to tyres, soles of shoes, or machine parts.

• true

• false

Write 3 uses of friction in our daily lives.

Airplanes have _____________ shape to reduce the friction in the air.

• streamlined

• broad

• hatchback

• non - streamlined

• none of the above