The speed of a bus increases uniformly from 15meter per seconds to 60 meter per seconds in 20second. calculate, the acceleration..

2.25 m/s²

Explanation:

Acceleration = change in velocity / time taken

                     = (60-15)/20

                     = 2.25 m/s²

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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