EASY
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The frictional force acts in the same direction as the movement of the object.

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Important Questions on Friction

EASY
Calculate the number of electrons constituting one coulomb of charge.
MEDIUM
A body has a negative charge of 1 μc. It means the body has gained:
EASY
What is the direction of force of friction acting on a moving object?
EASY
Friction causes no damage to tyres, soles of shoes, or machine parts.
EASY
A force that can slow down the movement of an object _____.
EASY
A big wooden box is being pushed on the ground from east to west direction. The force of friction due to the ground will act on this box towards _____.
HARD
What is frictional force? What are its advantages and disadvantages?
EASY
Name the force which always opposes motion.
EASY
Cotyledons are also called-
MEDIUM
What is friction?
EASY
What makes it hard to slide heavy objects across the floor?
EASY
Friction always opposes motion. 
MEDIUM
A car is moving towards North. What will be the direction of force of friction acting on this car due to surface of road?
MEDIUM
Why do we slip on a wet floor?
EASY
Why does a fast car slow down if its engine is switched off?
EASY
Electrostatic force makes it possible for us to walk.
EASY
Give an example to show that friction is a beneficial force. 
MEDIUM
_____ (Friction/gravity) makes it hard to slide a heavy object across a surface.
EASY

(a) Name two magnetic poles which attract each other.

(b) Name two magnetic poles which repel each other.

MEDIUM
Tyres and soles of shoes wear out because of friction.