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Physics help- off center collisions

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dirtylion27
Posts: 403 - Karma: 21
Sorry this is annoying but,
V1= 4.5m/s
momentum=.878m/s kg
m1=.196 kg
m2= .165 kg
theta= 42.7
I just cant figure out how to find v1 after collision, or v1 prime. thanks


Dec 10 2010 5:56PM
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john.stossel
Posts: 943 - Karma: 5
you gotta use trig for the angle  and conservation of momentum, i forget how to do that stuff
Dec 10 2010 5:59PM
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MEGAZORD
Posts: 4531 - Karma: -7
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Dec 10 2010 6:00PM
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appa
Posts: 2249 - Karma: 1,739
p=mv

m1v1+m2v1=m1v2+m2v2

use sines and cosines to determine momentum in the x and y direction... something like that
Dec 10 2010 6:01PM
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a_pla5tic_bag
Posts: 9215 - Karma: 5,398
i remember the formulas for elastic and inelastic collisions but i don't remember how do do angles. the one for elastic collision is posted above me unless someone posted while i was typing this.
Dec 10 2010 6:04PM
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yuck
Posts: 8384 - Karma: 2,090
i just did this in physics less than a month ago but im too lazy to explain it, plus this guy will do it better.

http://www.khanacademy.org/video/2-dimensional-momentum-problem?playlist=Physics
Dec 10 2010 6:44PM
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