It was one of the earliest times the concept of crustal motion had been presented to the scientific world, and it lay the foundation for the creation of current plate tectonics, even if Wegener's "continental drift" hypothesis was eventually refuted.
In order to comprehend mountain-building processes, volcanic eruptions, earthquakes, the evolution of the Earth's surface, and rebuild the continents and oceans that once covered it, plate tectonics, a theory about the dynamics of the lithosphere, revolutionized Earth sciences.
In the 1960s, the theory of tectonics was developed. The lithosphere, which really is typically 100 km thick and sits on top of the asthenosphere, a plastic layer, is said to be Earth's outermost, unyielding layer.
The lithosphere is divided into several small plates, six to eight medium-sized local plates, and seven extremely massive continental and oceanic plates.
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There's not enough information in the question to calculate the player's velocity. But we can find his average speed.
Speed = (distance covered) / (time to cover the distance)
Speed = (15 meters) / (3 sec)
Speed = (15/3) (m/s)
Speed = 5 m/s
There's no information telling us what direction he ran, so it's not possible to say anything about his velocity. ('Velocity' is not just a big word for 'speed'. It's a different thing, and to describe it, you need to know the speed AND the direction of the motion.)