Chapter 2, Problem 3P

To determine

The distance travelled during the inattentive period of time.

Answer to Problem 3P

Distance is 61.11 m.

Explanation of Solution

Given:

Speed of the car $v=110$ km/h and inattentive period of time is t = 2 sec.

Formula used:

Speed v, distance s and time t are related as

  $s=vt$

Calculation:

  $v=110\text{km/h}$

Hour and second are related as 1 h = 3600 sec.

Km and meter is related as 1 km = 1000 m.

So,

  $\begin{array}{c}v=110\text{km/h}\\ =\frac{110\times 1000}{3600}\text{m/s}\\ =30.55\text{m/s}\end{array}$

Now, the distance travelled by the car in t = 2 sec, is

  $\begin{array}{c}s=30.55\times 2\\ =61.11\text{m}\end{array}$

Conclusion:

Therefore, during the inattentive period of time the person travels a distance of 61.11 m.