# Unit of mean square velocity

by HUMERA.S
Tags: square, unit, velocity
 P: 9 hi.......... we know the unit of velocity is m/s2 and while calculating the mean square velocity we find the average(or mean) of the 'squares' of the given velocities. then the unit of MEAN SQUARE VELOCITY should be 'm2/s4' then how come its unit is also m/s2 and not m2/s4 ?
 P: 2,251 i think that it's m/s.
HW Helper
Thanks
P: 10,674
 Quote by HUMERA.S hi.......... we know the unit of velocity is m/s2 and while calculating the mean square velocity we find the average(or mean) of the 'squares' of the given velocities. then the unit of MEAN SQUARE VELOCITY should be 'm2/s4' then how come its unit is also m/s2 and not m2/s4 ?
The unit of velocity is m/s. m/s2 is for acceleration.
The unit of the mean of square velocity is m2/s2, but we ususally speak about root-mean-square (RMS) velocity or speed - and it is m/s.

ehild

P: 9
Unit of mean square velocity

 Quote by ehild The unit of velocity is m/s. m/s2 is for acceleration. The unit of the mean of square velocity is m2/s2
OOOPS..!! yeah sorry i made a mistake . the unit for velocity is m/s..

but is the unit of mean square velocity really m2/s2 ????
(i mean, i just want to confirm. because in my book the unit of mean square velocity is given as m/s...... so the book must be wrong .)
 HW Helper Thanks P: 10,674 Mean square velocity is the average of the squared velocity. If it is square velocity , the unit is m2/s2. It can be a typo in your book, or they meant root-mean square velocity. ehild

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