A bulluck cart covers a distance of 2 km with speed of 2 km / hr and returns with speed 3 km/ hr on same path. Find average speed of bullock cart? show me calculation plz.
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S=2km
u=2km/hr
v=3km/hr
v2=u2+2aS
(3)2=(2)2+2×a×2
9=4+4a
9-4=4a
5=4a
5/4=a
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