Conservation of Momentum
The law of conservation of momentum is explained qualitatively and mathematically through examples involving billiards and roller skaters.
The law of conservation of momentum is explained qualitatively and mathematically through examples involving billiards and roller skaters.
Learning Objectives
-Define the law of conservation of momentum.
-Differentiate between open and closed systems.
-Show how Newton’s 3rd Law of Motion and the impulse objects in a collision exert on each other lead to momentum being conserved in a closed, isolated system.
-Define the law of conservation of momentum.
-Differentiate between open and closed systems.
-Show how Newton’s 3rd Law of Motion and the impulse objects in a collision exert on each other lead to momentum being conserved in a closed, isolated system.
Closer Look 4B: Conservation of Momentum
In this Closer Look segment on conservation of momentum, we solve problems pertaining to the conservation of momentum. Scenarios include when the initial momentum of the system is zero, and when objects are involved in an inelastic collision.
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Vocabulary
closed system - matter does not enter or leave a system, and no net outside forces act on the system. law of conservation of momentum - in a closed and isolated system, the total momentum of objects in the system before a collision is equal to the total momentum in the system after the collision. momentum (p) - the quantity of motion of an object or, mass in motion; it is calculated by multiplying the mass of an object by the velocity of an object.
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