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March 28, 2015

March 28, 2015

Posted by **James** on Thursday, April 2, 2009 at 6:23pm.

Isn't this in inellastic collision equation. I used (m1v1)+(m2v2)=(m1+m2)(vf)

m1=8.8kg

v1=20km/h

m2=21.8kg

v2=0km/h

I got 5.75 km/h where did i go wrong?

- Physics -
**drwls**, Thursday, April 2, 2009 at 8:34pmYou went wrong doing the math. The equation you wrote is correct. m2 = 13, not 21.8.

(8.8)(20) = 21.8 Vf

Vf = 8.1 m/s

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