Momentum is the inertial energy of a body or object, generally a term that describes the energy stored in a moving mass. It takes into account the mass of an object ( m ),… and its velocity ( v ). The formula for momentum ( p ) is: p = mv .
Related Information: With this formula, we can calculate the momentum of a given object and find out how much energy it carries. This information might be useful in the design of barriers, to stop vehicles from crossing medians and running into oncoming traffic on freeways. Examples: If someone throws a ping pong ball, it carries a certain momentum (energy). If it hits a window. Generally, the window won't break. The momentum of the ball is low enough so that the energy the ball carries is insufficient to break the window. However, if that window is struck with a brick that is thrown with the same velocity, the window will almost certainly break. The mass of the brick is much greater than that of the ball, so it carries a lot more energy with it. It's momentum is a lot greater because its mass is so much greater. Should a small fishing weight, that breaks off a line in a practice cast, strike that window, it may break the window. However, if that same mass of lead is a projectile that has just been shot out of a firearm, and hits that window, it's probably going to shatter the window and go inside and make a mess out of whatever is in its way. The velocity of that small mass of lead, is so high in the latter case, that the energy it has will be much greater than that of the cast sinker owing to its higher velocity. There are some special considerations as regards quantum mechanics and a link is provided below for anyone interested in further investigation. A Different Perspective: Momentum can be thought of as the store of energy in a moving body. This energy can be put to work. If two bodies have different masses but the same velocity then the heavier one will have more momentum. If the two bodies are equal in mass but different in velocity then the faster one will have more momentum. ( Full Answer )