Question

2. Frictional force arises when two or
more objects come in contact with
each other.​

Answer 1

Explanation:

The force of gravity is the force with which the earth, moon, or other massively large object attracts another object towards itself. All objects upon earth experience a force of gravity that is directed "downward" towards the center of the earth.

The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are three types of frictional force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object.

Hence, gravity is a non-contact force and friction is a contact force.

Answer 2

Answer:

yes

Explanation:

becauese they lock the surface between them

for example you walk

then the surface between your leg and the earth has been locked