Question

70 n←
42 n←
→20 n
score: 3
net force
102 n
right
net force
92 n
left
net force
92 n
right
net force
102 n
left

Explanation:

Step1: Calculate total left force

Add the two left - directed forces: \(70\,\text{N}+ 42\,\text{N}=112\,\text{N}\) (left - directed forces are in the same direction, so we sum them).

Step2: Calculate net force

The right - directed force is \(20\,\text{N}\). The net force is the difference between the total left force and the right force (since they are in opposite directions). So, \(F_{\text{net}}=112\,\text{N}-20\,\text{N} = 92\,\text{N}\). The direction of the net force is towards the left because the total left force (\(112\,\text{N}\)) is greater than the right force (\(20\,\text{N}\)).

Answer:

Net Force 92 N Left (the second option: Net Force 92 N, Left)