Question

HE REACTION FORCE, CAUSED BY EXPULSION OF MASS IN ONE DIRECTION, APPLIED ON A SURFACE IN A DIRECTION PERPENDICULAR TO THE SURFACE IS CALLED ___ *

Answer 1

The reaction force, caused by the expulsion of mass in one direction, applied on a surface in a direction perpendicular to the surface is called the normal force.

Explanation:

• Newton's third law of motion states that when a force is applied on an object, an equal force known as reaction force acts in the opposite direction.
• The normal force is opposite to the surface.
• Another force equal in magnitude but opposite in direction is also exerted by the surface.
• The normal force takes place only when the objects are in contact with each other.