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September 30, 2014

Homework Help: Physics

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

john and Sarah participated in a roller skating show. while 75kg john skated backwards at 3.00m/s, 60kg Sarah jumped into his arms with a velocity of 5m/s in the same direction.
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

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