Chapter 9, Problem 41A

How much work is required to increase the kinetic energy of a car by 5000 J?

To determine

Work required to increase the kinetic energy.

Answer to Problem 41A

  $W=5000\text{J}$

Explanation of Solution

Given:

The increase in kinetic energy is, $\Delta KE=5000\text{J}$

Formula Used:

The work required is equal to the change in kinetic energy, that is

Work = ? KE

Calculation:

As work done is equal to the increase in kinetic energy and change in kinetic energy is $\Delta KE=5000\text{J}$

So, work required is

  $W=\Delta KE=5000\text{J}$

Conclusion:

Therefore, the work required is $W=5000\text{J}$