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April 20, 2014

April 20, 2014

Posted by **Brittany** on Sunday, December 19, 2010 at 9:53pm.

- Physics -
**bobpursley**, Sunday, December 19, 2010 at 9:57pmYour question and those of your classmates keep using the word "prefectly". A reaction is either elastic, or not elastic. One cant be imperfectly elastic, nor perfectly elastic.

momentum:

.640*3= .640V1 + .740V2

energy:

1/2 .640*9=1/2 .640 V1^2+ 1/2 .740 V2^2

use the first equation to solve for V1 in terms of all else, then put that expression into the second equation, and have fun expanding it and collecting the terms. You will have a quadratic, use the quadratic equation to solve it.

- Physics -
**smartass**, Tuesday, November 13, 2012 at 10:31pmactually they can be inelastic.....

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