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Solve question no-2

Dear student

A v e r a g e s p e e d = \frac{T o t a l d i s \tan c e t r a v e l l e d}{T o t a l t i m e} = \frac{2 s}{t_{1} + t_{2}} w h e r e s i s t h e d i s \tan c e t r a v e l l e d f r o m o n e p l a c e t o a n o t h e r t_{1} i s t i m e i n g o i n g c y c l i s t f r o m o n e p l a c e A t o a n o t h e r p l a c e B a n d t_{2} i s t h e t i m e i n c o m i n g f r o m B t o A . T h u s, t_{1} = \frac{s}{u} a n d t_{2} = \frac{s}{v} h e n c e A v e r a g e s p e e d = \frac{2 s}{s (\frac{1}{u} + \frac{1}{v})} = \frac{1}{\frac{1}{2} (\frac{1}{u} + \frac{1}{v})}

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