an object travels 50 km per hour for 100 km and next 60 km per hour 100 KM find its average speed
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Answer:
t1=d1/s1=100/50=2 hr=120/60hr
t2=d2=100/60hr
s avg=total distance/total time
=(100+100)/(120/60+100/60)
=600/11kmph
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