# Erupting Volcano

A $$100 \text{m}$$ long erupting volcano ejects a rock with speed $$10\sqrt{10} \text{ms}^{-1}$$ at a such angle from horizon that rock gets it's maximum range. Find this unknown angle(in degree).

Details

1. $$g = 10 \text{ ms}^{-2}$$
2. There is no air resistance and no change in gravitational acceleration.
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