l Sprint LTE 4:36 PM 69% Question Problem 22 (a) (i), Chapter 02 A test driver a

Question

l Sprint LTE 4:36 PM 69% Question Problem 22 (a) (i), Chapter 02 A test driver at Incredible Motors, Inc., is testing a new model car having a speedometer calibrated to read m/s rather than mi/h. The following series of speedometer readings was obtained during a test run as shown in Figure S2.22. Compute the average acceleration during each 2s interval 0 to 2 s, 2 S to 4 s 4 s to 6 S 6 s to 8 s, Time (s) Velocity (m/s) 0 2 5 10 15 20 22 22 Figure S2.22 Velocity of test car as a function of time 0 2 4 6 8 10 12 14 16 Unanswered

Explanation / Answer

We know,

average acceleration = Total change in velocity/total time

For 0 to 2s, average acceleration, a = 0 - 0/2 - 0 = 0

For 2s to 4s, a = 2 - 0/4 -2 = 2/2 = 1 m/s^2

For 4s to 6s, a = 5 - 2/6 - 4 = 3/2 = 1.5 m/s^2

For 6s to 8s, a = 10 - 5/8 - 6 = 5/2 = 2.5 m/s^2

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