Question

john pushes forward on a car with a force of 125 n while bob pushes backward on the car with a force of 225 n. what is the net force on the car?

a. 100 n backward
b. 100 n forward
c. 350 n backward
d. 350 n forward

Explanation:

Step1: Define forces

Let the forward - pushing force be positive, so $F_1 = 125\ N$, and the backward - pushing force be negative, so $F_2=- 225\ N$.

Step2: Calculate net force

The net force $F_{net}=F_1 + F_2$. Substitute the values: $F_{net}=125+( - 225)=125 - 225=-100\ N$. The negative sign indicates the direction is backward.

Answer:

A. 100 N backward