Question

Here is a graph of the movement of a car. What was the acceleration of this vehicle between 15 and 20 seconds? Show your work and your answers.

Answer 1

-2.4 m/s^2 At 15 seconds, the velocity was 12 m/s, at 20 seconds, the velocity was 0 m/s. The graph shows a straight line between those 2 points, so the acceleration was uniform. So we have a velocity change of 0 m/s - 12 m/s = -12 m/s And a time i