PHYS171_f11_lecture_30

PHYS171_f11_lecture_30 - PHYS171 Prof. Arthur La Porta...

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PHYS171 Prof. Arthur La Porta [email protected] Rm 1111, IPST building (building #085) Favorite color Red Gr e n B l u Purple o t h r 17% 35% 4% 4% 39% 1. Red 2. Green 3. Blue 4. Purple 5. other

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Chapter 9 Linear Momentum Definition: Momentum . The quantity of motion, defined by v m p r r = This is a useful quantity because, as we will see, the total momentum of a system is conserved under Newton’s laws. We can often figure out what is happening in a system by comparing the initial momentum with the final momentum. Similar in spirit to the Energy formulation, where we can figure out how fast an object is going by applying the conservation of Energy. Chapter 9 Linear Momentum Conservation Why is momentum conserved? If two particles A and B interact, Newton’s laws tell us that the force exerted on A by B is equal and opposite to the force exerted on B by A. We also know that the acceleration of an object is determined by the net force acting on it.
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This note was uploaded on 12/29/2011 for the course PHYSICS 171 taught by Professor La porta during the Fall '11 term at Maryland.

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PHYS171_f11_lecture_30 - PHYS171 Prof. Arthur La Porta...

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