Any quantity which can be measured by any method is called a physical quantity. all the physical quantities are divided into two groups.
- scalar quantities
- vector quantities
Definition : The physical quantities, which are completely specified by their magnitude only are called scalar quantities.
Examples : Mass, time, distance, speed, work, energy, temperature charge etc
Definition : the physical quantities which are completely specified by their magnitude and direction both ae known as vector quantities.
Examples : Displacement, velocity, acceleration, force, momentum, torque, etc.
Difference between scalar and vector quantities
|SCALAR QUANTITIES||VECTOR QUANTITIES|
|The physical quantities. which are completely specified by their|
magnitude only, are called scalar quantities.
|The physical quantities, which are completely specified by their magnitude direction both are|
called vector quantities
|Scalar can be added, subtracted and Multiplied by a simple arithmetic method.||They are added, subtracted and multiplied by the geometric or trigonometric methods.|
|Scalar can be represented by a number i.e.|
|A vector can be represented graphically by a directional line segment with an arrow.|
|Mass, volume, time, distance, speed, density, work, energy, temperature, etc.||Area, displacement, velocity, acceleration|
force, momentum, torque, etc.