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AP Physics 1
Vocabulary Chapter 7
Term | Definition |
---|---|
Conservation of Momentum | When no net external forces acts on a system, the total momentum of the system remain unchanged. When two internal bodies interact and no external forces are acting on the objects, their total momentum remains unchanged. |
Elastic Collisions | Very brief actions of two or more particles where they come in close position with one another, resulting in a change in momentum or exchange of energy. These "collisions" obey the law of conservation. |
Impulse | The change in the momentum of an object that occurs when an unbalanced force acts upon the object for a period of time. >N*s is the SI unit of impulse |
Inelastic Collision | The usual case for collisions, in which kinetic energy is not conserved, but momentum is conserved. |
Momentum | A vector quantity that has the same direction as an objects velocity, its magnitude is equal to the product of the objects mass and speed; p=mv. |