The brakes are applied to a moving car, causing it to uniformly slow down. While slowing, it moves a distance of 40.0 m in 8.15 s to a final velocity of 2.20 m/s, at which point the brakes are released. (a) What was its initial speed (in m/s), just before the brakes were applied? 9.80 How is average velocity related to displacement and time? How is average velocity related to initial and final velocity (when acceleration is uniform)? Use these relationships to solve for initial velocity. m/s (b) What was its acceleration (in m/s) while the brakes were applied? (Assume the initial direction of motion is the positive direction. Indicate the direction with the sign of your answer.) -1.25 What is the initial velocity? What is the final velocity? How are they related to acceleration? Be careful of sign. m/s