Hey, guys just joined PF, was hoping you could help with this questions and in turn maybe i can return the favour (with the little physics knowledge I have). 1. The problem statement, all variables and given/known data In a acceleration test, 2 markers are placed 0.30 km apart. The first car passed the first marked with a velocity of 5.0 m/s [E], the second passed the marker with a velocity of 33.0 m/s [E]. Calculate the Cars average acceleration. 2. Relevant equations v1 = 5.0 m/s [E] v2 = 33 m/s [E] Delta D = 0.30 km Aav = ? The kinematics that i am using is Vf² = Vi² + 2aav(d) 3. The attempt at a solution The problem i am having is rewriting the equation. I need to rewrite this for aav. Vf² - Vi² = Vi² + 2aav(d) vf² - vi²/2(d) = aav This is what i have so far, but it must be wrong i just dont see how. When i plug in the numbers.. 1089 - 25/2(0.3) = aav 1064/0.6 = aav aav = 1773.3 this cant be right can anyone help me?