Four research vessels have the following motion records:
| Record | Speed | Direction |
|---|---|---|
| P | 3.0 m/s | east |
| Q | 3.0 m/s | north |
| R | 5.0 m/s | east |
| S | 5.0 m/s | east |
Which pair of records has equal speeds but different velocities?
Records Q and S
Records P and R
Records P and Q
Records R and S