Isolated Systems. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.That is, the momentum lost by object 1 is equal to the momentum gained by object 2. force that originates from a source other than the two objects of the system a force that is not balanced by other forces. A system in which the only forces that contribute to the momentum change of an individual object are the forces acting between the objects themselves can be considered an isolated system.
Definition of 'Beta' Definition: Beta is a numeric value that measures the fluctuations of a stock to changes in the overall stock market. Description: Beta measures the responsiveness of a stock's price to changes in the overall stock market.
Risk. The beta bottom line is that it measures risk between a stock and the market. Beta is not infallible. For example, a 1.4 beta for a security indicates that it will move, up or down, 1.4 times the historical market move.olatililty. When you add the component of volatility, a stock might have a beta greater than 1. Even if the stock has a positive correlation with the market, if it is volatile, with wider swings up or down, you might witness a stock with a beta higher than 1.