The superhero moves at 3600 km/h and his partner at 4415 km/h. The earth is round, so both him and his partner can get to the same location even travelling at opposite directions.
Speed is the ratio of distance travelled to the total time taken, it is given by:
Speed = distance / time
The superhero flies at 60000 m/min = (60000m * 1 km per 1000 m) / (1 min * 1 hr per 60 min) = 3600 km/h
The earth is round, so both him and his partner can get to the same location even travelling at opposite directions.
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