Time
multi cubes
It is a meter, which is represented by a lower case m.
The Kilogram.
Momentum
it is a quantity defined as work done per unit charge.it has same unit as voltage which is volt represented by 'V'.
That unit is the "Ampere". It represents electrical current.
the physical quantity is distance and unit is meters
It is a unit rate.A unit rate.
Unit Rate
It is called a base quantity.However, the distinction between a base quantity and a derived quantity is often not clear. For example, the second and metre are meant to be the base units for time and length. But the metre itself is defined in terms of the distance travelled by light, through vacuum, in 1/299,792,458 of a second. Consequently, a metre itself can be considered a derived unit.
The base unit of mass is the kilogram, and is written kg.
multi cubes
It is a meter, which is represented by a lower case m.
an unknown quantity represented by a letter
The answer is a Unit Rate.<3
The Kilogram.
The logarithm of 'L inches' has no unit of its own. It's called " log( Linches ) ".