A body of mass $20 k g$ is moving with a velocity of $2 v$ and another body of mass $10 k g$ is moving with velocity $v$ along same direction the velocity of their centre of mass is ?

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Solution

Velocity of Centre of mass $= \frac{Σ m_{i} v_{i}}{Σ m_{i}}$

$= \frac{20 (2 v) + 10 (v)}{20 + 10}$

$= \frac{50 v}{30}$

$= \frac{5 v}{3}$

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A body of mass 20 kg is moving with a velocity of 2v and another body of mass 10 kg is moving with velocity v along same direction the velocity of their centre of mass is ?

Velocity of Centre of mass =ΣmiviΣmi=20(2v)+10(v)20+10=50v30 =5v3

A body of mass $20 k g$ is moving with a velocity of $2 v$ and another body of mass $10 k g$ is moving with velocity $v$ along same direction the velocity of their centre of mass is ?

Velocity of Centre of mass $= \frac{Σ m_{i} v_{i}}{Σ m_{i}}$

$= \frac{20 (2 v) + 10 (v)}{20 + 10}$

$= \frac{50 v}{30}$

$= \frac{5 v}{3}$