The train approaching the station decreases its speed from 20 m / s to 5 m / s for 4 seconds. find acceleration?

univerkov | November 17, 2020 | education

acceleration = (final speed-initial speed): time
a = (V-Vo): t
a = (5 (m / s-20 (m / s)): 4 (s)
a = (- 15): 4
a = -3.75
Answer: a = -3.75 (m / s ^ 2)

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