Two electric tugs, P and Q, pull baggage trailers across an airport. Each tug exerts a steady force in the direction of motion.
| Tug | Force in N | Distance moved in m | Time taken in s |
|---|---|---|---|
| P | 6200 | 45 | 50 |
| Q | 5400 | 60 | 54 |
Calculate which tug has the greater mean useful power output and by how much.