Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.

Daisy (65.0kg) skates on ice at 4.5m/s to greet her friend (75.0kg), who is standing still, with open arms. As they collide, while holding each other, with what speed do the both move off together?

Is this correct?

(Va+b)=75(0)+(65)(4.5) / 75+65
= 0+292.5 / 140
= 2.1m/s

Last edited by Kristy02y (2010-07-13 00:39:22)