Chapter 10, Problem 43A

To determine

Work done by car on air.

Answer to Problem 43A

Work done by car on air is $W=\text{8}\text{.8711}\times {\text{10}}^7\text{J}$

Explanation of Solution

Given:

Force exerted by car is $F=551\text{N}$

Distance travelled is $d=161\text{km}$

Formula Used:

The work done is given by

  $W=Fd$ ….. (1)

Calculation:

On putting the values in Equation (1),

  $\begin{array}{l}W=551\times 161\times {10}^3\\ =88711\text{kJ}\\ =\text{8}\text{.8711}\times {\text{10}}^7\text{J}\end{array}$