Four autonomous underwater gliders, AAA, BBB, CCC, and DDD, complete different scientific survey missions. The distance covered and duration of each mission are recorded in the table below.
| Glider | Distance covered (km) | Time taken (hours) |
|---|---|---|
| A | 36 | 3 |
| B | 72 | 6 |
| C | 72 | 8 |
| D | 110 | 5 |
Use the information in the table to describe and compare the motion of the four gliders.
Use the data to calculate speeds and support your comparisons.