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A hockey puck B rests on frictionless, level ice and is struck by a second puck...

A hockey puck B rests on frictionless, level ice and is struck by a second puck A, which was originally traveling at 40.0 m/s and which is deflected 30.0◦from its original direction. Puck B acquires a velocity at a 45.0◦to the original direction of A. The pucks have the same mass. (a) What is the speed of each puck after the collision?(b) What fraction of the original kinetic energy of puck A dissipated during the collision? please show each step you did.

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