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putyoursoxon

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## Homework Statement

a mountain climber plans to jump from A to B over a crevasse. Determine the smallest value of the climbers initial velocity Vo and the corresponding value of the angle alpha so he lands at B

## Homework Equations

A to B is 1.8m horizontal distance and B is lower than A by 1.4m

Xx=Vo*T

Xy=Vo*T-.5*9.81*t^2

## The Attempt at a Solution

Distance X = 1.8 = cos(alpha)*Vo*t => T=1.8/(cos(alpha)*Vo)

Distance Y = -1.4= Vo* (1.8/(cos(alpha)*Vo)-.5*9.81*(1.8/(cos(alpha)*Vo))^2

My question is I don't know what other equation to use since I have two unknown equations I thought I could use the Range equation R= (Vo^2/g)*Sin(2alpha) but this is not on level ground so I don't think it will work. Ideas?