# What is Momentum?

Physics

## definition

### Linear Momentum

Linear momentum is a vector quantity defined as the product of an object's mass, , and its velocity, . Linear momentum is denoted by the letter and is called momentum for short. Note that a body's momentum is always in the same direction as its velocity vector. The unit of momentum are kg. m/s.

## definition

### Unit and formula for momentum

Momentum is a product of mass and velocity.It is denoted as . Momentum has both direction and magnitude. It is a vector quantity. Its direction is same as that of the velocity.

Unit of momentum is or