A body covers one third of its journey with speed 'u', next one third journey with speed 'v' and the rest of the one third journey with speed 'w' calculate the average speed
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let the totaldistance be x.
for first one third distance(x/3) time is x/u
for second third distance(x/3) time is x/v
Then fr last one third (x/3) time is x/w
avrg speed=total distance/total time
on solving we get
avrg speed= uvw/wv+uw+uv
for first one third distance(x/3) time is x/u
for second third distance(x/3) time is x/v
Then fr last one third (x/3) time is x/w
avrg speed=total distance/total time
on solving we get
avrg speed= uvw/wv+uw+uv
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