2. Superman is able to fly at an average velocity of 355 m/s. If he begins at a position of -30 meters and flies for a time of 1 seconds, what is his final position?

final position = 325 m

Explanation:

distance covered in 1 second = speed x time

                                                 = 355 m/s  x   1 s

                                                 = 355 m

∴  final position =  initial position + distance covered

                          =  - 30 m  +  355 m

                          =  325 m

#1, it has the most formal tone, and goes more with the authors opinion.