Question

The car is moving forward with a force of 4000 N. Air is moving in a backward direction with a force of 1500 N and is acting on a car. what will be the direction of the moving car? *

Answer 1

Let`s choose the forwards as the positive direction. Then, we can write the net force acting on the car:

$$F_{net} = F_{car} - F_{air},$$ $$F_{net} = 4000 \ N - 1500 \ N = 2500 \ N.$$

The positive sign of the net force means that the car is moving in the forward direction.

Answer:

$F_{net} = 2500 \ N,$ in the forward direction.