This is one of the most interesting indicator in mql4 language

Description:

Linear Momentum:

Momentum is strength of an object that moves to different place — this is my own definition. Momentum can be calculated with following equation: momentum = mass x velocity. You should already know that velocity is speed with direction.

Shortest equation will be: p=mv where p is momentum, m is mass (in kg) and v is velocity (in m/s).

Linear Momentum Implementation in MetaTrader Custom Indicator:

The following will explain why it’s called Linear Momentum in Forex:

p = momentum; m = mass, converted into volume of trade or tick;

I would prefer to use tick volume because it’s more easy to find tick information than volume of all lots traded around the world; v = velocity, it’s a value taken from pips movement divided by timeframe (point/seconds, originally in m/s).