Final answer:
The net work done on the wagon can be calculated by subtracting the work done by friction from the work done by the child pulling the wagon.
Step-by-step explanation:
The net work done on the wagon can be calculated by subtracting the work done by friction from the work done by the child pulling the wagon. The work done by the child pulling the wagon can be calculated using the formula:
Work = force * distance * cos(angle)
Substituting the given values:
Work = 83 N * 4 m * cos(11.9°)
To calculate the work done by friction, use the formula:
Work = force of friction * distance
Substituting the given value:
Work = 17 N * 4 m
Finally, subtract the work done by friction from the work done by the child pulling the wagon to get the net work done.