Force of Friction

THE FRICTION FORCE IS A CONTACT FORCE.

• TRUE

• FALSE

______________ is applied on a carrom board to reduce friction .

• powder

• refine oil

Q2. Which of the following is not the effect of force?

• Force can change the shape of object.

• Force can change the size of the object.

• Force can change the mass of an object.

• Force can stop a moving object.

Q1. Push or pull acting upon any object as a result of an interaction is

• wt

• force

• mass

• none

Q4. Which is not the advantage of friction?

• Friction helps in walking.

• Friction allows us to write on paper.

• Cars and buses move safely on roads due to friction.

• Friction causes wear and tear.

Q12. Friction can be increased by increasing the ________of the surfaces in contact.

• Smoothness

• Area

• Roughness

• None of the above

Q17. A car can skid on the wet road due to:

• Increased friction between the road and tyres.

• reduced friction between the road and tyres.

• None of the above.

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

Tags

NGSS.MS-PS2-2

friction is a

• necessary evil

• evil

• animal

• force

Tags

NGSS.MS-PS2-2

if door makes a creaking noise, what shall we do ?

• we should apply oil on door hinges

• we should put powder

• I don't know

• none of these

• all of these