Final answer:
To find the net force (F(net)) in box 1 with forces of 9 N, 0 N, 2 N, and 5 N, add together all the forces if they are in the same direction, resulting in 16 N for this scenario.
Step-by-step explanation:
To solve for the F(net) in box 1 with given forces of 9 N, 0 N, 2 N, and 5 N, we need to sum up all the forces, taking into account their directions. If all forces are applied in the same direction, we simply add them up. If some forces are opposing each other, we subtract the smaller force from the larger one. However, without specific information about the direction of each force, we can only provide a general response.
In the given reference information, the net external force (Fnet) is found by subtracting the friction force from the force applied to the floor (Ffloor - f). For example, with a force applied to the floor of 150 N and a friction force of 24.0 N, the Fnet is 126 N. Applying this principle and assuming all forces are additive, the solution for the student's question would be: F(net) = 9 N + 0 N + 2 N + 5 N = 16 N.