A man can swim 2km/h in still water. Find at what angle to the bank he must head if he wishes to swim directly across a river flowing at a speed of 1km/h.

I don't understand how to find that.

  1. 👍
  2. 👎
  3. 👁
  1. call x across the river
    y up river
    then y component must come out = 0
    that means 2 sin T -1 = 0
    sin T = 1/2
    T = 30 degrees from x axis toward upstream.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    You want to swim straight across a river that is 76m wide. You find that you can do this if you swim 28 degrees upstream at a constant rate of 1.7m/s relative to water. At what rate does the river flow? The angle is measure from

  2. calculus

    A man launches his boat from point A on a bank of a straight river, 3 km wide, and wants to reach point B, 2 km downstream on the opposite bank, as quickly as possible. He could row his boat directly across the river to point C

  3. physics

    A child, who is 45 m from the bank of a river is being carried downstream by the river's swift current of 1.0 m/s. As the child passes a lifeguard on the river's bank, the lifeguard starts swimming in a straight line until she

  4. science

    a man wishes to swin across a river 600 m wide. If can swim at the rate of 4 km/hr in still water and the river flows at 2 km/hr. Then in what direction must he swim to reach a point exactly opposite to the starting point bnd when

  1. Physics

    A river has a steady speed of 0.500 m/s.A student swims upstream a distane of 1.00 km and swims back to the starting point. If the student can swim at a speed of 1.20 m/s in still water, how long does the trip take? How much time


    A river is flowing from west to east at a speed of 8m/min, a man on the south bank of the river , capable of swimming at 20m/min in still water, wants to swim across the river in the shortest time. He should swim in a direction of

  3. calculus

    You are standing at the edge of a slow moving river which is one mile wide and wish to return to your campground on the opposite side of the river. You can swim at 2 mph and walk 3 mph. You must first swim across the river to any

  4. physic

    adaobi walks 2km due west and 2km due south calculate the displacement of the girl

  1. Calculus

    A swimmer wishes to swim directly across a river that has a current of 2.5m/s. He can swim 3.5m/s in a pool. Include a diagram. a. Calculate the heading that the swimmer must use in order to swim directly across a river relative

  2. AAMU

    a woman jogs for 2km at 8km/h and then walks for 2km at 6km/h. What is her average speed for the entire trip?

  3. Physics

    A man can row a boat at 13m/s in still water. If the aims at crossing to the opposite bank of a river flowing 5m/s, at what angle to the bank of the river must he row the boat?

  4. math :(

    An observer stands on the edge of a 375 m high cliff. Below him is a river. He estimates that the angle of depression to the near bank of the river is 80° and the angle of depression to the far bank is 60°. Find the width of the

You can view more similar questions or ask a new question.