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A car moves at a constant speed of 60 km/hr for 1km and at 40km/hr for next 1km.What is the average speed and average velocity?

S1=60km/hr,S2=40 km/hr

Average speed=S1+S2/2 =100/2=50km/hr

Average velocity=2S1S2/S1+S2 =48km/hr