The work done on an object is calculated using the formula:
\[ \text{Work} = \text{Force} \times \text{Distance} \times \cos(\theta) \]
In this case, the force exerted is 50 newtons, the distance raised is 0.5 meters, and the angle \(\theta\) between the force and the direction of motion is 0 degrees (since the force is applied vertically upwards along the direction of motion).
So, the calculation becomes:
\[ \text{Work} = 50 , \text{N} \times 0.5 , \text{m} \times \cos(0^\circ) \]
Since \(\cos(0^\circ) = 1\):
\[ \text{Work} = 50 , \text{N} \times 0.5 , \text{m} \times 1 \]
\[ \text{Work} = 50 \times 0.5 = 25 , \text{joules} \]
Thus, the person does 25 joules of work in raising the box.