With what average acceleration did the bus move, if the speed reading on the speedometer
| September 1, 2021 | education
With what average acceleration did the bus move, if the speed reading on the speedometer changed from 18 km / h to 72 km / h in a time of 1 minute.
t = 1 min = 60 s.
V1 = 18 km / h = 5 m / s.
V2 = 72 km / h = 20 m / s.
a -?
a = (V2 – V1) / t.
a = (50 m / s – 5 m / s) / 60 s = 0.75 m / s2.
Answer: a = 0.75 m / s2.
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