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**Translational velocity help!!!**

## Homework Statement

A ball is on an incline with µ = 30±. Its initial height is 1.5 m. When

it reached the bottom of the incline, what is the ball’s translational (linear)

velocity? [Use conservation of energy to solve.]

## Homework Equations

r= s[tex]\vartheta[/tex]

## The Attempt at a Solution

r= (1.5)sin(30)

I am confused with this problem because a radius was not given and I am not sure if I started it right...