Question

to the motion of a body.
a frictional force acts in a
direction blank to the motion of a body ​

Answer 1

Appropriate Question :

A frictional force acts in a direction opposite to the motion of a body .

Required Answer :

→ $\underline {\bf{ Opposite}}$

The force of friction resists the motion of an object or retards the motion. The frictional force always acts in the direction opposite to that the motion of the body.

For example : A ball rolling on the ground reduces in speed and stops after sometime. This is because of the friction that is acting in the direction opposite to that the motion of the ball.

Know More!

● Friction is the force that retards the motion of an object.

● It always works in the opposite to the direction of the moving body.

● Friction produces heat and sound.

● Study of the friction is called tribology.

● Nature of the surfaces and the force with with the surfaces are pressed are the two factors that affect the friction.

● Friction are of two types :

• Static
• Kinetic [ Sliding and rolling ]

Answer 2

$\large{\bold{\underline{Correct\; Question- \: }}}$

A frictional force acts in a ________ direction blank to the motion of a body

$\large{\bold{\underline{Required \: Answer- \: }}}$

A frictional force acts in a opposite direction blank to the motion of a body

$\large{\bold{\underline{Additional \: Information - \: }}}$

Frictional force

• When one surface is moving over another surface, a force comes into play and opposes their relative motion.

• This force is called friction or force of friction.

• Friction always opposes motion because it acts in opposite direction to motion.

• Frictional force is a type of contact force [ act only when there is physical contact between two interacting ]

Lets know .. what is contact force ?

• Forces which act only when there is physical contact between two interacting objects are known as contact forces.

• OR These kinds of forces are applied only when two or more objects come in contact with each other.

• Muscular and Frictional force are the example of contact force .