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Posted by **phillip** on Thursday, December 1, 2011 at 11:02pm.

a. how fast did the pair roll backwards together?

b. if john instead skated toward sissy when she jumped, would their combined final velocity have been larger or smaller than the answer in a.

i trying to figure out how to set this equation up thankyou very much if you help me

- Physics -
**drwls**, Friday, December 2, 2011 at 1:29amKinetic energy is lost in both processes, but momentum is conserved. The momentum conservation equation becomes:

a. 75*3.0 + 60*5.0 = (135)*Vfinal

b. -75*3.0 +60*5.0 = (135)*Vfinal

Compute and compare Vfinal values.

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