1. The problem statement, all variables and given/known data The position of the front bumper of a test car under microprocessor control is given by: x(t) = 2.17 + (4.80m/s^2)t^2 - (0.100 m/s^6)t^6 Find the acceleration at the first instant when the car has zero velocity. 2. Relevant equations 3. The attempt at a solution 0m/s^2, 4.8m/s^2 I know that the first instant that the car has zero velocity is at 2.17m at 0 seconds in time. I also know that the car is about to accelerate at this instant. I can't figure out how to determine what the acceleration is though.