01-07-2017
Physics

contestada

A train travels 80 kilometers in 3 hours , and 84 kilometers in 2 hours .What is the average speed ?

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budwilkins budwilkins

01-07-2017

Average speed(v) = total distance(d) / total time(t), because d=v×t
So total d = 80 + 84km = 164km
Total t = 3 + 2hours = 5hrs
v = d / t = 164km / 5hrs = 32.8 km/hr

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