Chapter 4, Problem 43A

To determine

The net force acting on the car to slow it down.

Answer to Problem 43A

  $\text{6900}\text{N}$

Explanation of Solution

Given:

The mass of the car is $m=2300\text{kg}$

It slows down at the rate of $a=3.0{\text{m/s}}^{\text{2}}$ .

Formula used:

From Newton’s Second law of motion:

  $F_{net}=ma$

Where, a is the acceleration, m is the mass and $F_{net}$ is the net force.

Calculation:

Substitute the values and solve:

  $\begin{array}{c}{F}_{net}=m\times a\\ =2300\times \text{3}\text{.0}\\ \text{= 6900}\text{N}\end{array}$

Conclusion:

Thus, the net force acting on the car to slow down its motion is 6900N.