10_31_Momentum_Last

# 10_31_Momentum_Last - 10/31 Momentum Last Presentation 2-D...

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Unformatted text preview: 10/31 Momentum Last Presentation 2-D Elastic Collision Upcoming presenters please see me Pendulum and Block, will collect Thursday Cancel text prob (7-39) with my apologies HW Bowling Ball Race Due Friday, 11/2 Suggested Problems: 7-11,20,22,32,36 Thursday: Begin Rotational Dynamics (Rotational Energy first) 2-D elastic collision, or, is this a scratch shot? ? Ball 1 drives the ball 2 toward the corner pocket. Assume the collision is elastic and determine if ball 1 lands in the other corner pocket. = 36.8 v 1,i v 2,f v 1,f Whats the plan? 2nd law, energy, momentum Need both!!! Remember lab? No? p 1,i = p 1,f + p 2,f p 1,i All conserve momentum, which one(s) conserve energy? 1 / 2 mv 1,i 2 = 1 / 2 mv 1,f 2 + 1 / 2 mv 2,f 2 1 / 2 mv 1,i 2 = mv f 2 1 / 2 v 1,i 2 = v f 2 v f = v 1,i 1 2 Which one? 1 1 2 1 2 Only true when ms =, elastic, and one at rest What do we do? 2-D elastic collision, or, is this a scratch shot?...
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## This note was uploaded on 12/21/2010 for the course PHYS Physics 21 taught by Professor Larrywatson during the Fall '08 term at North Dakota.

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10_31_Momentum_Last - 10/31 Momentum Last Presentation 2-D...

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