Newton's Second Law of Motion

Physics

definition

Linear Momentum

Linear momentum is defined as a product of mass of an object and its velocity. It's a vector quantity. Any change in mass or the velocity of the system causes change in linear momentum.

example

Find impulsive force using impulse momentum relation

Example: A particle of mass kg moving with a velocity of m/s is acted upon by a force which changes its direction of motion by an angle of without changing its speed. What is the magnitude of impulse experienced by the particle?

Solution:
Initial velocity of the particle    

Final velocity of the particle    
Change in momentum                     
N s
Magnitude of impulse           N-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
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