1. The problem statement, all variables and given/known data 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. Relevant equations i know vf(final)= v + at 3. 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?