Problem 5Q

For an answer to be complete, the units need to be specified. Why?

Solution 5Q:

Step 1 of 1

For an answer to be complete, the units need to be spouted because the measurement of any physical quantity is made relative to a particular standard or unit.

For example a reading 18.4, just gives the value of magnitude. It can be 18.4 m,

18.4 kg etc. but if we say 18.4 m, it means that the quantity has a magnitude of

18.4 and has a unit of meters therefore; 18.4 m specifies the unit of length.

A measurement must be measured against a scale, and the units provide that scale. Units must be specified or the answer is meaningless. If the units are not specified the answer could mean a variety of quantities, and could be interpreted in a variety of ways