Linear Momentum:

Linear momentum of a body is defined by the product of the mass of that body and the linear velocity of the body.

Let us consider a body of mass \( m \) is moving with a linear velocity \( \vec{v} \),

then the linear momentum of that body is given by,

 \( \vec{p}=m\vec{v} \)

Since the velocity is the vector quantity and multiplied by a scalar quantity mass, then the linear momentum is a vector quantity.

Unit of linear momentum is \( kg\cdot{m}/sec \) in S.I. unit.

Dimension of linear momentum is \( [MLT^{-1}] \).