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## Homework Statement

A bobsled glides down a hill with an acceleration of -4.5 m/s If it stops after 5 s, what was its initial velocity?

2. Homework Equations

2. Homework Equations

i know vf(final)= v + at

## The Attempt at a Solution

i multiplied -4.5m/s by 5s and i got the correct answer the only problem is the answer is negative, i need it to be positive. Where or what did i do wrong?