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Block 1 of mass m1 slides along a fricti...

Block 1 of mass `m_1` slides along a frictionless floor and into a one-dimensional elastic collision with stationary block 2 of mass `m_2 = 3m_1`. Prior to the collision, the center of mass of the two block system had a speed of 3.00 m/s. Afterward, what are the speeds of (a) the center of mass and (b) block 2 ?

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The correct Answer is:
(a)3.00 m/s ; (b) 6.00 m/s
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