There is no theoretical OR observational evidence for that statement.
Volcanoes: Most volcanoes are formed by the movement of tectonic plates<span> on the surface of the earth. These plates basically float on mantle. Sometimes these plates will sink into the mantle. The rock becomes so hot it melts. Gradually, the molten rock (the melted rock) will then make it's way back up. When it surfaces it, we call it "lava". As lava layers, it slowly forms a volcano.
Valleys: Basically formed by a river valley. The stream shapes the Earth's crust over time into a funnel-like v-shape or u-shape (depending on the flow of the stream).
Mountains: When plates collide and through pressure start building up into a cone shape.</span>
The vertical component of the stone's initial velocity is 0 because it was projected horizontally.
The horizontal component:
velocity = displacement / time
Vx = 60 / 3.19
Vx = 18.8 m/s
V = Vx
So the stone's initial velocity is 18.8 m/s