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## Homework Statement

A drag racer, starting from rest, speeds up for 402 m with an acceleration of +23.0 m/s2. A parachute then opens, slowing the car down with an acceleration of -6.70 m/s2. How fast is the racer moving 3.35 102 m after the parachute opens?

## Homework Equations

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## The Attempt at a Solution

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I have no clue where to begin this problem. Please help!