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## Homework Statement

http://img370.imageshack.us/img370/9488/96191446sb5.jpg [Broken]

Evaluate Ax, the x-component of the acceleration between M and S.

## Homework Equations

a=x/t^2

## The Attempt at a Solution

M= 48 m at 8.5 s

S= 40 m at 11.5 s

so change of x=-8 m, and change of t = 3s

so a= -8 / (3^2), so -8/9 m/s^2 (or -0.889 m/s^2). Where did I go wrong?

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