what is the difference between magnitude and direction
These two terms are entirely different. Magnitude of a scalar or a vector quantity is the actual physical measure of that quantity.
Example: If the force acting on a body is 30N, then this 30N is the magnitude of that force.
Whereas direction of a physical quantity specifies the direction in which the physical quantity is acting in a three dimensional space.
Example: If the force acting on a body is 30N, then this 30N is the magnitude of that force.
Whereas direction of a physical quantity specifies the direction in which the physical quantity is acting in a three dimensional space.