Momentum+By+Macy

Momentum is the mass of an object times it velocity; determines how difficult it is to stop the object's motion.



- - - - - - - - - - - How do mass and velocity affect Momentum? The more mass or velocity an object has the more momentum it has. - - - - - - - - - - - Law of conservation of momentum: The law of conservation of momentum states that as long as interacting objects are not influenced by outside forces, such as friction, the the total amout of it cannot change. Example: If you throw a ball while on a skateboard the ball takes away momentum to the left, and you have to take away an equal amount to the right. - - - - - - - - - - - Five facts about Momentum: -The total amount of momentum in a closed system does not change. -If an object is moving, then it has momentum. -Momentum is also know as "mass in motion." And because all objects have mass; and if an object is moving, then it has momentum, or it has "mass in motion" - The units for momentum are kilogram-meters per second or kg-m/sec. - Usually when talking about momentum you need to use positive and negative to tell the direction of motion. - - - - - - - - - - - Formula: P=mv

P=momentum, kgm/s M=mass, kg V=veloocity, m/s - - - - - - - - - - - Momentum Problems: 1. How much momentum does a 30kg object going at 4m/s have? Answer 2. An object going 3m/s has 36kgm/s. Find its mass. Answer - - - - - - - - - - - Sources: -Momentum Notes -http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/momentum/u4l1a.html -[] -Ipc Textbook