Physics

The water in a river flows uniformly at a constant speed of 2.53 m/s between parallel banks 69.8 m apart. You are to deliver a package directly across the river, but you can swim only at 1.74 m/s.

(a) If you choose to minimize the time you spend in the water, in what direction should you head? ____° from the direction of the stream

(b) How far downstream will you be carried? ______m

(c) If you choose to minimize the distance downstream that the river carries you, in what direction should you head? ____° from the direction of the stream

(d) How far downstream will you be carried? _____m

-----------------

I know we're dealing with motion in 2D, but I don't even know which equations to use or how to start. Any help or jumpstarts will be greatly appreciated.

  1. 👍 0
  2. 👎 0
  3. 👁 445
  1. A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 23.0° below the horizontal. It strikes the ground 6.00 s later.

    (a) How far horizontally from the base of the building does the ball strike the ground?

    (b) Find the height from which the ball was thrown.

    (c) How long does it take the ball to reach a point 10.0 m below the level of launching?

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Science

    1. How does groundwater cause erosion and deposition? a. When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves. *** b. When a river overflows, it moves downhill, resulting in the

  2. physics

    A river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 9.2 m/s due north relative to the water. (a) What is the velocity of the boat as viewed by

  3. Physics

    A river flows at a speed of 4.60 m/s. A boat, capable of moving with a speed of 5.80 m/s in still water is rowed across the river at an angle of 53.0° to the river flow. Calculate the resultant velocity with which the boat moves

  4. Physics

    A motorboat heads due east at 8.5 m/s across a river that flows to the south at a speed of 2.5 m/s. a. What is the velocity of the boat relative to a stationary observer on the shore? B. If the river is 1360 m wide, how long does

  1. Physics

    The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The

  2. GEN MATH

    Solve the ff. problems below. Show your complete solution: 1.) A number added to four times its reciprocal is equal to the sum of 3/2 and the quotient of two or more than three times the same number and four. 2.) A car travelled

  3. Physics

    A boat propelled so as to travel with a speed of 0.5m/s in still water, moves directly (in a straight line) across a river that is 60m wide. The river flows with a speed of 0.30m/s. How long in seconds does it take the boat to

  4. physics

    A boat propelled so as to travel with a speed of 0.50m/s in still water, moves directly (in a straight line) across a river that is 60m wide. The river flows with a speed of 0.30m/s. How long in seconds does it take the boat to

  1. algebra

    A river flows at the rate of 7km/hr. A patrol boat travels 46 km upriver and returns in a total time of 15hr. What is the speed of the boat in still water?

  2. Physics Fluids

    Water is flowing through a rectangular channel that is 12 m wide with a speed of 0.75 m/s. The water then flows into four identical rectangular channels that have a width of 3.0 m. The depth of the water does not change as it

  3. Physics

    A man can swim in still water at a speed of 3km/hr.He wants to cross the river that flows at 2km/hr and reach the point directly opposite to his starting Point.find the angle if his body makes with the river flow.

  4. physics

    A 200-m-wide river flows due east at a uniform speed of 2.0 m/s. A boat with a speed of 8.0 m/s relative to the water leaves the south bank pointed in a direction west of north. What are the (a) magnitude and (b) direction of the

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