Chapter 2, Problem 62GP

To determine

To Find: Earth’s average speed.

Explanation of Solution

Given:

Distance travelled by earth in one year around the sun, $d={10}^9\text{km}$

Time, $t=1\text{year=365}\text{days}\times \text{24 }\frac{\text{h}}{\text{day}}=8760\text{h}$

Formula Used:

Average speed, $v=\frac{d}{t}$

Calculations:

The average speed of the Earth can be calculated as follows:

  $\begin{array}{l}v=\frac{d}{t}\\ v=\frac{{\text{10}}^{\text{9}}\text{ km}}{\text{8760 h}}\\ v=114155.25\text{km/h}\end{array}$

Conclusion: 

Thus, Earth’s average speed is $114155.25\text{km/h}$ .