
#1
Feb1313, 11:47 PM

P: 9

hi..........
we know the unit of velocity is m/s^{2} 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 'm^{2}/s^{4}' then how come its unit is also m/s^{2} and not m^{2}/s^{4} ? 



#2
Feb1313, 11:54 PM

P: 2,265

i think that it's m/s.




#3
Feb1413, 01:09 AM

HW Helper
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P: 9,817

The unit of the mean of square velocity is m^{2}/s^{2}, but we ususally speak about rootmeansquare (RMS) velocity or speed  and it is m/s. ehild 



#4
Feb1413, 08:37 PM

P: 9

unit of mean square velocitybut is the unit of mean square velocity really m^{2}/s^{2} ???? (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 .) 



#5
Feb1513, 01:40 AM

HW Helper
Thanks
P: 9,817

Mean square velocity is the average of the squared velocity. If it is square velocity , the unit is m^{2}/s^{2}. It can be a typo in your book, or they meant rootmean square velocity.
ehild 


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