A train travels with a speed of 60 km/h^-1 from station A to B and returns with a speed of 80 km/ h^-1 from station B to A. Find the average speed and average velocity.
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Answer:
the average speed of the train is = speed of train from A to B+speed of train from B to A by 2=60+80/2=140/2=70
the average velocity of the train is 0
Average velocity=Displacement/time
=0/time
=0
Step-by-step explanation:
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Step-by-step explanation:
average velocity=net displacement/total time=0 [Because net displacement=0]
average speed=total distance/total time=2s/(s/60+s/80). [s=distance between A and B]
=2×60×80/(60+80)
=9600/140
=960/14
=68.57km/h
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