1. The problem statement, all variables and given/known data A sports car moving at constant speed travels 120 m in 4.7 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.) 2. Relevant equations Change in speed/time of change 3. The attempt at a solution 120/4.7=25.53m/s end speed 0m/s-start speed 25.53m/s divided by time 4s= -6.38m/s^2 divided by 9.8m/s2= -.651 g I got this wrong...what did I do wrong?