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Chapter 1: Q4. (page 17)

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

Short Answer

Expert verified

It is important to specify the units to complete an answer to improve accuracy and give clearer meaning.

Step by step solution

01

Step 1. Defining magnitude and unit

It is important to specify the units in an answer because it adds more meaning. The number, along with the unit, is called magnitude.

A unit is used to compare the magnitudes of quantities of similar nature. It acts as a reference for measurements.

02

Step 2. Example showing the importance of units

The value of distance only in figure, say 5, does not convey a clear meaning. After adding the unit meter, it becomes five meters, which conveys distance accurately.

The value of time as only ten does not convey a clear meaning. After adding the unit seconds, it becomes ten seconds, which conveys time accurately.

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