How do I draw the following problem so I have something to refer to when answering a) and b)?

A river is 2 km wide and flows at 6 km/h. A motor boat that has a speed of
20 km/h in still water heads out from one bank perpendicular to the current.
A marina lies directly across the river on the opposite bank.

a. How far downstream from the marina will the boat reach the other bank? (0.6 km)
b. How long will it take? (6 min)

  1. 👍 0
  2. 👎 0
  3. 👁 114
  1. Although the boat is pointed directly across, it does not travel perpendicular to shore. This is because, relative to the land, there is a Vx = 6 km/h component along the stream direction due to the river flow. There is also a Vy component of 20 km/h across the stream. The crossing time is 2.0 km/20 km/h = 0.1 h (6 minutes). The distance the boat drifts downstream in that time is 6 km/h*0.1h = 0.6 km

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. english

    You could draw me to fire, you could draw me to water, you could draw me to the gallows, you could draw me to any death, you could draw me to anything I have most avoided, you could draw me to any exposure and disgrace. What

    asked by Anonymous on September 16, 2019
  2. math

    If 90% of the households in a certain region have an answering machines and 50% have both answering machines and call waiting, what is the probability that a household chosen at random and found to have an answering machine also

    asked by anonymous on October 19, 2007
  3. math

    draw a model to solve the division problem. The problem is 1 1/2divided by1/4= so I know you make 1 1/2 into3/2 3/2*4/1=6 I know how to do that part but have no idea how to draw a model for it, can you explain it? Thank you

    asked by E6 on October 22, 2014
  4. English

    1. It's very noisy here. 2. I can't stand it anymore. =========================== What does 'it' refer to in #1? What does 'it' refer to in #2? Are both refer to the same thing?

    asked by rfvv on March 19, 2015
  5. Statistics

    Problem 7 Refer again to the table in Problem 6. : 3.0 points Fill in the value of the missing entry.

    asked by A on February 25, 2013
  6. English

    To solve this problem, ten schools founded the Football Association of England and made a set of standard rules in 1863. That was the year when moden soccer started. (What does 'that' refer to in the last sentence? Does 'that'

    asked by rfvv on June 14, 2011
  7. Algebra Word Problem

    COULD SOMEONE PLEASE HELP ME WITH THIS PROBLEM!!!!!!!! Television Sets. What does it mean to refer to a 20-in TV Set? Such units refer to the diagonal of the screen. A 20-in TV Set also has a width of 16 inches. What is its height

    asked by pj on February 14, 2009
  8. Math

    I need to know if I'm answering this correctly. How can you figure out the size of a of a part without having to draw a diagram? consider example of 2/3 × 4/5. A) describe how you could draw a diagram to me this calculation. I

    asked by Jessica on February 15, 2017
  9. history

    What does this quote mean? Who does it refer to? and What kind of government does it refer to? Thank you for using the Jiskha Homework Help Forum. You need to type the quote so we may see it! Otherwise we can't help you. "A

    asked by Mack on March 25, 2007
  10. in what order comes

    This is highly advanced qquestion. You have a basket draw, and you have 14 balls left form 39 balls and 5 number will comes out next, would you be able to calculate which balls comes after sixth. It could be in any combo: for

    asked by behzad yousefzadeh on April 7, 2013

More Similar Questions