If the velocities of three molecules are 2 m/s, 3 m/s, 4m/s respectively. Then the mean velocity will be
If the velocities of three molecules are 2 m/s, 3 m/s, 4m/s respectively. Then the mean velocity will be
A. 4.5 m/s
B. 3 m/s
C. 2 m/s
D. 5 m/s
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