Linear Momentum

The linear momentum of an object is its mass × its velocity.

p=m v

Two objects can have the same momentum if the products of their mass and velocity are equal. This could mean a small mass with a high velocity or a large mass with a lower velocity.The unit of linear momentum is kgms^-1 or Ns.Momentum is a vector quantity because it is the product of a scalar and a vector quantity.When specifying the direction of linear momentum a positive sign is used for one direction and a negative sign is used for the opposite direction. The choice of sign does not matter.