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## Homework Statement

A spring with constant 72500.0 N/m is compressed 54.6 cm and used to launch a 109.0 kg physics student. The student starts decending down a 13.4 m high track that is frictionless until the student starts up the incline again. The student's coefficient of kinetic friction on the 28.5° incline is 0.129. What is the student's speed just after losing contact with the spring?

## Homework Equations

e=0.5mv

^{2}

eg=mgh

spring = 0.5kx

^{2}

## The Attempt at a Solution

alright for this question i equated the mgh+0.5mv

^{2}= 0.5kx

^{2}

and solved for v .... is this the wrong thinking for this question pls. help