## Most recent change of Momentum

Edit made on July 10, 2009 by ColinWright at 10:17:16

Deleted text in red / Inserted text in green

WM
Momentum (more correctly linear momentum) is the product of mass and velocity EQN:p=mv.
It is a vector quantity and measured in Ns (Newton Seconds).

Newton's 2nd law of motion states that the force acting on a body is proportional to the rate of change of the momentum. (When the mass of the object is constant and with specially chosen units this law becomes the familiar F = ma).
Newton's 2nd law of motion states that the force acting on a body is proportional to
the rate of change of the momentum. (When the mass of the object is constant and with
specially chosen units this law becomes the familiar F = ma).

There is also a quantity called angular momentum which is the product of the moment of inertia and angular velocity.

Albert Einstein, in his Special Theory of Relativity, revised the definition of momentum but that is not surprising as he revised the definitions of most of the quantities in classical mechanics e.g. - length, mass, velocity, time, energy etc.