- #1

gap0063

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## Homework Statement

A 3.2 kg particle moves along the direction

under the influence of a force described by the

potential energy function U = a k~xk, where

a = 5.48 J/m and x is the position of the

particle in meters measured from the origin

as in Figure.

The total energy of the particle is 18 J.

[PLAIN]http://img828.imageshack.us/img828/2877/problem9.jpg

(a) Determine the magnitude of the distance

that the particle travels from the origin before

reversing direction.

Answer in units of m.

(b)Find the maximum speed of the particle.

Answer in units of m/s.

## Homework Equations

Not sure

the only equation I know with distance is [tex]\Delta[/tex]E

_{mech}=-f

_{k}d

## The Attempt at a Solution

So I know the total energy is 18 J

but there is no u

and there is no velocity...maybe i can turn acceleration into velocity?

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