# The center of mass of velocity is defined by

1. $\mathbf{V_{cm}&space;=&space;\sum&space;m_{i}&space;v_{i}}$
2. $\mathbf{V_{cm}&space;=&space;\sum&space;\frac{\mathrm{d}&space;r_{i}}{\mathrm{d}&space;t}}$
3. $\mathbf{V_{cm}&space;=&space;m_{i}\sum&space;\frac{\mathrm{d}&space;r_{i}}{\mathrm{d}&space;t}}$
4. $\mathbf{V_{cm}&space;=&space;\frac{1}{M}\sum&space;m\frac{dr_{i}}{dt}&space;}$

## The center of mass of velocity is defined by

The center of mass of velocity is defined by $\mathbf{V_{cm}&space;=&space;\frac{1}{M}\sum&space;m\frac{dr_{i}}{dt}&space;}$

### Center of mass of velocity

$\mathbf{V_{cm}&space;=&space;\frac{1}{M}\sum&space;m\frac{dr_{i}}{dt}&space;}$

Or,

$\mathbf{V_{cm}&space;=&space;\frac{1}{M}\sum&space;m_{i}v_{i}}$

 MSC Physics MCQs 1. Atomic Physics 2. Nuclear Physics 3. Classical Mechanics 4. Quantum Mechanics 5. Electronics Physics 6. Solid State Physics 7. Physical Wave Optics 8. Waves and Oscillations 9. Electromagnetic Theory 10. Special Theory of Relativity 11. Heat and Thermodynamics 12. Mathematical Method for Physics