When one swims across a flowing river max. energy is spend in
a.first 1/3 of the distance b.second 1/2 of the distance
c.last 1/3 of the distance d.equal energy is spent through out
When one swims across a flowing river max. energy is spend in
a.first 1/3 of the distance b.second 1/2 of the distance
c.last 1/3 of the distance d.equal energy is spent through out