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Four particles have speed 2,3,4 and 5 cm...

Four particles have speed 2,3,4 and 5 cm/s respectively. Their rms speed is :

A

3.5 cm/s

B

(27/2) cm/s

C

54 cm's

D

(54/2) cm/s

Text Solution

Verified by Experts

The correct Answer is:
D
`U_(rms) = sqrt((2^2 + 3^2 + 4^2 + 5^2)/(4))`
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