The concept of inertia and momentum are regularly confused because of their similar definitions. Inertia is the resistance offered by a body to the motion whereas momentum is the tendency of a body to continue moving. Let us look at the differences between the two to understand the concept better.
Difference between Momentum and Inertia
|Momentum is a vector quantity as it the tendency of a body to remain in motion.||Inertia is a scalar quantity as it is the resistance offered by the body to any change in its velocity.|
|Momentum is denoted as ‘p’.||Inertia is denoted as ‘I’.|
|The momentum of a body of mass ‘m’ moving with a velocity of ‘v’ is calculated as p=m×v||The inertia cannot be calculated using a formula.|
|Linear momentum and angular momentum are the two types of momentum.||The inertia of rest, inertia of motion, and inertia of direction are the three types of inertia.|
|Momentum depends on mass and velocity.||Inertia depends only on mass.|
|The total momentum is conserved.||Inertia has nothing to do with the conservation of energy.|
The difference between momentum and inertia should be understood clearly as these are an important topic in Physics. To know more about momentum and inertia, Visit BYJU’S.