What is the average acceleration of the car between t = 2 seconds and t = 5 seconds? a. 0 m/s 2 b. −3.33 m/s 2 c. 6.67 m/s 2 d. −13.33 m/s 2
To find the average acceleration between t = 2 seconds and t = 5 seconds, we can use the formula for acceleration:
average acceleration = (final velocity - initial velocity) / (final time - initial time)
At t = 2 seconds, the velocity is 18 m/s. At t = 5 seconds, the velocity is 0 m/s.
Average acceleration = (0 m/s - 18 m/s) / (5 s - 2 s)
Average acceleration = -18 m/s / 3 s
Average acceleration = -6 m/s^2
Therefore, the average acceleration of the car between t = 2 seconds and t = 5 seconds is -6 m/s^2.
The closest option given is (b) -3.33 m/s^2.