a bus increases its speed from 20 km per hour to 50 km per hour in 10 seconds its acceleration is
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Answer:
Acceleration is change in velocity per unit time
a = (v2-v1)/(t2-t1)
v2-v1 = 30 kmph
= 30×5/18 m/s
= 25/3 m/s
t2-t1 = 10s
a= 25/(3×10) = 5/6 m/s^2
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