2. 1. A car accelerates from rest to 16.21 meters per second in 7.66 seconds. What is the car's rate of acceleration in meters per second squared? Round your answer to two decimal places.
4. 2. If the initial velocity of a car is 12.45 meters per second and its final velocity is 69.72 meters per second, what is its acceleration in meters per second squared if it takes 6.45 sec to make this change? Round your answer to two decimal places.
6.