Final answer:
The mass of the box is 15.3 kg.
Step-by-step explanation:
To find the mass of the box, we can use Newton's second law of motion, which states that the force applied to an object is equal to the product of its mass and its acceleration. In this case, the fisherman applies a horizontal force of 46.0 N and the box has an acceleration of 3.00 m/s^2. Therefore, we can set up the equation:
Force = mass × acceleration
Plugging in the given values, we have:
46.0 N = mass × 3.00 m/s^2
Solving for mass, we get:
mass = 46.0 N / 3.00 m/s^2 = 15.3 kg
Therefore, the mass of the box is 15.3 kg.