mass of particles are 1kg and 2 kg
Velocities of the particles are 2m/s and 1m/s
Velocity of center of mass is given by Vcm=m1v1+m2v2m1+m2=(1∗2)+(2∗1)1+2=43m/sV_{cm} = \frac{m_1v_1+m_2v_2}{m_1+m_2} = \frac{(1 * 2) + (2*1)}{1+2} = \frac{4}{3} m/sVcm=m1+m2m1v1+m2v2=1+2(1∗2)+(2∗1)=34m/s
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