Question

which of the following describes the net force of the box in the diagram?
0 n to the right
20 n to the right
30 n to the right
10 n to the right
10 n
20 n

Explanation:

Step1: Define right - direction as positive

Let right - direction force be positive and left - direction force be negative.

Step2: Identify forces

The force to the right is $F_{right}=20\ N$ and the force to the left is $F_{left}=- 10\ N$.

Step3: Calculate net force

$F_{net}=F_{right}+F_{left}=20+( - 10)=10\ N$. The positive sign indicates the net force is to the right.

Answer:

10 N to the right