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December 22, 2014

December 22, 2014

Posted by **Anonymous** on Sunday, June 13, 2010 at 9:45pm.

a) compute the speed of each puck after the collision

b) what fraction of the original kinetic energy of puck A dissipates during the collision

- College Physics -
**Juandissimo Hermiez**, Tuesday, June 15, 2010 at 4:28pmTHE ANSWER IS ''I SAID GIVE ME MY FREE SUNDAE!!!''

- College Physics -
**Neoh**, Wednesday, June 16, 2010 at 9:33ama)Let final speed of A be v1, and final speed of B be v2.Using conservation of momentum, consider the horizontal:

40m = v1*cos30 + v2*cos45

and the vertical

0 = v1*sin30 + v2*sin45

In second equation, express v1 in terms of v2, then substitute into the first equation to find v2. v1 is found in similar way.

b) From a), u have the value of v1. Calculate the fraction (v1*v1)/(40*40)

- College Physics -
**Brainiac**, Sunday, November 28, 2010 at 5:40pmV1= 25.4

v2=14.6

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