2 Blocks attached to either end of a string question?

Posted on 2016-03-31 18:57:00 in Physics by CARMON

Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. The masses are released from rest, and the more massive one starts to descend. After this block has descended a distance 1.10m m , its speed is 3.00m/s m/s . 

If the total mass of the two blocks is 12.0kg kg , what is the mass of the more massive block? 

So far I got the equation, m1 m2 = 12 but I cant find another equation to get the weights of both blocks. Thanks for any help!

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