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Solution 16.2

From Mechanics

Revision as of 16:25, 23 September 2010 by Ian (Talk | contribs)
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Using

mAvA+mBvB=mAuA+mBuB

and

vA=vB=0


0=403+2vv=−2120=−60 ms-1

Skate board moves in the opposite direction to the child at 60  ms-1.

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