math

Suppose you want to row your boat across a 3-mile-wide river. You can row at a speed of 2.5 mi/h. The current is flowing south at a rate of 1.4 mi/h. At what angle upstream should you aim your boat so that is ends up going straight across?

  1. 👍 0
  2. 👎 0
  3. 👁 72
asked by Karina
  1. if x=0 means straight across, you need to go upstream at an angle x where

    sin x = 1.4/2.5

    note that the 3-mile width and southward flow of the water are irrelevant

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. algebra 2

    suppose you want to row your boat across a 3 mile wide river and row at a speed of 2 mi/hr. the current is flowing south at a rate of 1.2 mi/hr. at what angle upstream should you aim your boat so that it ends up going straight

    asked by Insky on January 29, 2013
  2. calculus

    A person can row at a constant speed of 6 miles per hour. If the rower wants to row directly across a river with a current of 2 mph, at what angle should they row? How fast does the boat actually cross the river?

    asked by teddy on December 15, 2015
  3. 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

    asked by Avilene on December 4, 2009
  4. physics

    Mary needs to row her boat across a 120 m -wide river that is flowing to the east at a speed of 1.4 m/s. Mary can row the boat with a speed of 2.0 m relative to the water. 1. How long does it take Mary to reach the opposite river

    asked by Melissa on September 15, 2010
  5. Physics

    A man can row a boat at a speed of 2metres per second . The man set out to row the boat in a river from A to B. The water in the river flows 0.8metres per second in the opposite direction.Determine the velocity of the boat through

    asked by Faith on December 30, 2016
  6. physics

    Draw a diagram to scale showing the direction in which a man must row across a river in order to reach a point directly opposite, if he rows 3 mile/hr while the speed of current is 2 mile/hr. My ans- with angle of 33' with

    asked by jzee11 on July 4, 2015
  7. Physics

    Mary needs to row her boat across a 100m wide river that is flowing to the east at a speed of 1.0m/s. Mary can row with a speed of .0m/s a) If mary points her boat due north, how dar from her intended landing spot will she be when

    asked by Jake on September 14, 2012
  8. Advanced Math

    Find DE if matrix D= Row 1= -2,4,6 and ROW 2= 5,-7,1 and matrix E= Row 1= 1,-2 Row 2= 0,-4, and Row 3= -3,4 WORK: [(-2)(1)+(4)(0)+(6)(-3)]=-20 [(-2)(-2)+(4)(4)+(6)(4)]=44 [(5)(1)+(-7)(0)+(1)(-3)]=2 [(5)(-2)+(-7)(4)+(1)(4)]=-34 The

    asked by Lucy on June 22, 2008
  9. math

    river flows at rate of 1km/hr.a boat takes 2 times as long to row a distance in upstream as to row the same distance in downstream.the speed of boat instill water?

    asked by maya on August 2, 2017
  10. Physics

    A boy wishes to row across a river in the shortest possible time. He can row at 2m/s in still water and the river is flowing at 1m/s. At what angle should he point th efront of his boat? The answer is 90 degrees but I don't

    asked by Brenda on September 23, 2012

More Similar Questions