Vectors and Scalars

A vector has a magnitude (length) and a direction.

A scalar has no direction. Its value may be negative.

Example : Displacement is a vector .

When a particle changes its position from A to B, it
undergoes a displacement from A to B, which we represent with an arrow pointing
from A to B. The displacement tells us nothing about the actual path the
particle takes.

Example: Temperature is a scalar

T = -10^{0} C.

A
vector can be shifted without changing its value, *if *its magnitude
(length) and direction are not changed.

All are equivalent