Question

8. It is possible for us to walk on the ground only
because of the force of
*
non – friction
O magnet
O machines
friction​

Answer 1

Answer:

answer is machines frictoin

Answer 2

Appropriate Question:

It is possible for us to walk on the ground only

because of the force of :

O Non – friction

O Magnet

O Machines

● Friction $\checkmark$

Required Answer:

● Friction

Explanation:

Because of friction it is possible to walk. If there won't be friction, we'll slip. Friction between surface of our feet and ground allows us to walk by pushing off the ground without slipping and falling. It the friction decreases (like on the smooth surface) , we won't be able to walk.

Hence, option D is correct. $\checkmark$

Extra Information:

• Friction is the force that acts in the opposite direction in which body is applying force or moving.

• Friction retards or slows the down the motion of the body.

• Friction produces heat and sound.

• Smoother the surface, less the friction is.

• Rougher the surface, more the friction is.

• Study of friction is called tribology.

• Friction depends on the nature of the surface and the force acting on it.