Chapter 1, Problem 1.31P

(a)

Interpretation Introduction

Interpretation:

The speed of light in a vacuum in $\text{km/hr}$ is to be determined.

Concept introduction:

Speed is the magnitude of change of position of the object and is therefore related to the motion of the particles. It is a scalar quantity as it has magnitude only, but not direction. The SI unit of speed is $\text{m/s}$. The other units of speed are $\text{km/hr}$ and $\text{mi/min}$.

The conversion factor to convert the speed in $\text{m/s}$ to $\text{km/hr}$ is as follows:

$\text{1 m/s}=3.6\text{km/hr}$

(b)

Interpretation Introduction

Interpretation:

The speed of light in a vacuum in $\text{mi/min}$ is to be determined.

Concept introduction:

Speed is the magnitude of change of position of the object and is therefore related to the motion of the particles. It is a scalar quantity as it has magnitude only, but not direction. The SI unit of speed is $\text{m/s}$. The other units of speed are $\text{km/hr}$ and $\text{mi/min}$.

The conversion factor to convert $\text{m}$ to $\text{mi}$ is as follows:

$\text{1}\text{m}=\text{0}\text{.000621371}\text{mi}$

The conversion factor to convert $\text{s}$ to $\text{min}$ is as follows:

$\text{1}\text{s}=\text{0}\text{.0166666667}\text{min}$

The conversion factor to convert the speed in $\text{m/s}$ to $\text{mi/min}$ is as follows:

$\text{1 m/s}=0.0372\text{mi/min}$