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March 29, 2015

Posted by **Anonymous** on Wednesday, May 9, 2012 at 9:04pm.

2. A 10.0 kg object moving to the right with a speed of 4.0 m/s collides and sticks to a 4.0 kg object moving to the left with a speed of 4.0 m/s. How much energy is lost as heat during the collision?

- Physics -
**Elena**, Thursday, May 10, 2012 at 11:42am2.

m1•v1 – m2•v2 = (m1+m2) •u

u = {m1•v1 – m2•v2}/(m1+m2)=

=10•4 - 4•4 /10+4 =1.71 m/s.

m1•v1²/2 + m2•v2²/2-(m1+m2)u²/2 =91.43 J.

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