A cargo aircraft makes an outward flight carrying equipment. The equipment is unloaded before the return flight.
The table gives data for the aircraft while cruising on each flight.
| Flight | Mass of aircraft (kg) | Speed (m/s) |
|---|---|---|
| outward | 16 000 | 75 |
| return | 12 500 | 90 |
Calculate the percentage increase in the kinetic energy of the aircraft from the outward flight to the return flight.