1. The problem statement, all variables and given/known data A race car starts from rest and travels east along a straight and level track. For the first 5.0 s of the car's motion, the eastward component of the car's velocity is given by vx(t)=(0.940 m/s3)t2 2. Relevant equations I think I am suppose to use the equation x-x0=(v0+v)/2)t 3. The attempt at a solution I know the givens are x0=0 and t=5.00s, but I don't know how to use vx to solve for acceleration. Thanks. You guys didn't happen to obtain7.46 m/s^2 as the answer, did you?