Final answer:
The work done by friction is 36 J and the work done by the applied force is 165 J.
Step-by-step explanation:
The work done by friction can be calculated using the formula:
Work = Force x Distance
Given that the force of friction is 12 N and the distance is 3 m, the work done by friction is:
Work = 12 N x 3 m = 36 J
The work done by the applied force can be calculated using the same formula. Given that the force applied is 55 N and the distance is 3 m, the work done by the applied force is:
Work = 55 N x 3 m = 165 J