the ans is option 2 how?
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avg speed=total distance/total time
=108/2=54km/hr or 15m/s
avg velocity=total displacement/time
=54√2/km/hr
=15/√2m/s
=108/2=54km/hr or 15m/s
avg velocity=total displacement/time
=54√2/km/hr
=15/√2m/s
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