Answer: Downstream, the current is helping the swimmer go faster relative to the land.
The current is helping the swimmer go faster relative to the land.
velocity of stream = [tex]v_w[/tex]
velocity of swimmer = [tex]v_s[/tex]
During upstream, swimmer would move against the stream. Hence, his velocity = [tex]-v_s[/tex]
Net velocity, [tex]v_f=v_w-v_s[/tex]
During downstream, swimmer would move along the stream. Hence, his velocity = [tex]v_s[/tex]
Net velocity, [tex]v_f=v_w+v_s[/tex]
