a car changes speed from 15m/s to 8m/s in 20 seconds. calculate the acceleration

calculate the acceleration.
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1 Answer

velocity = starting velocity + acceleration * time

8 = 15 + a * 20

-7 = a*20

a = -7/20

a = -0.35 meters per second^2

Note:  Acceleration is negative because we're decelerating (slowing down).
by Level 13 User (103k points)

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