Why can’ t we take the set of length, time and velocity as fundamental quantities while on the other hand the set of length, time and mass can be listed as fundamental quantities ?

Set of Fundamental quantities need to be such that they are independent in terms of the nature of quantities they represent. If LT and velocity are taken as fundamental quantity set, you would not be able to accomaodate mass into it. Also, velocity in itself will be dependent on the other 2 physical dimensions(LT^-1) which would be just a waste. Velocity is a derived quantity whereas mass is a basic physical quantity which is a requirement for a physical quantity to be accomodated into the set of fundamental quantities.

Length, time and mass are the three of fundamental quantities among seven quantities.
Actually, velocity is a function of length and time, thats why we can’t take it a fundamental quantity..
It is a derived quantity....


Good Luck..................

Length, time and mass are the three of fundamental quantities among seven quantities.
Actually, velocity is a function of length and time, thats why we can’t take it a fundamental quantity..
It is a derived quantity....


Good Luck..................