Linear Momentum and Collision

Linear Momentum and Collision - Linear Momentum and...

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Linear Momentum and Collisions: Problem Solving Lecture 23 (Chapters 8, 13-15) Dr. Marina Milner-Bolotin mmilner@ryerson.ca Check Blackboard for course web site!
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Cream & Coffee Problem 2 Two identical cups are filled one with coffee (100 ml) and cream (100 ml). A spoon full of cream is taken from the cream cup and poured into the coffee cup. Then a spoon full of coffee-cream mixture is poured back into the cream cup. Compare the volume ratios (cream/coffee and coffee/cream) in the two cups at the end. What if this procedure were to be repeated 100 times? The density of cream and coffee ARE NOT equal.
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Part I: Lecture 23 – Momentum Conservation Goals: To figure out the outcome of a collision if it involves an unknown changing force acting over very short period of time. Learn how to describe collisions using the laws of momentum and energy conservation. Learn how to solve problems involving collisions and the law of momentum conservation. 3
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Impulse ( Summary ): is a vector quantity; has a magnitude that is equal to the area under the force - time curve; has the dimension of momentum (kg m/s); is not a property of the particle itself; it is a measure of the degree to which an external force changes the momentum of a particle; When we say that an impulse is given to a particle, it is implied that momentum is transferred from an external agent to that particle. p p p p F I 1 2 p p 2 1 2 1 = - = = = d dt t t
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24/05/10 5 Why To Use Momentum Conservation Instead of Newton’s Laws?
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This note was uploaded on 05/23/2010 for the course PHYSICS PCS211 taught by Professor Juan during the Winter '09 term at Ryerson.

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Linear Momentum and Collision - Linear Momentum and...

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