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## Homework Statement

A stone is thrown at 30 m/s. what is the widest river it can be thrown across? (the stones ends at the same vertical height from where it was thrown)

## Homework Equations

x=v

_{xo}t

y=v

_{yo}t + 0.5gt

^{2}

## The Attempt at a Solution

i know i need to find t first. using the second equation i got t as 5.2s. when i multiplied 5.2s by v

_{xo}(30m/s) i got 156.3 m but the answer should be 92m. wat did i do wrong?