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

1.	Four particles have speeds 2, 3, 4 and 5 cm/s respectively. Their rms speed is
Answer» `3.5 cm//s` `(27//2) cm//s` `SQRT(54) cm//s` `sqrt( 54)//2 cm//s` ANSWER :D

Discussion