boats

  1. B

    Problem on boats and streams

    Help required to solve algebra 1 homework problem What is the total time taken by a person, If he rows to a place at a distance of 105 km and comes back to the starting point ? Speed of a boat in standing water is 9 kmph and speed of the stream is 1.5 kmph.
  2. H

    Two ferry boats...

    Two ferry boats sail back and forth across a river, each traveling at a constant speed, and turning back without any loss of time. They leave opposite shores at the same instant, pass for the first time 700 feet from one shore, continue on their way to the banks, return and pass for the second...
  3. C

    Two Boats word problem - need function (please help)

    A boat leaves a dock at 2:00PM, and travels directly south at a speed of 20 miles per hour. Another boat is traveling towards the dock, from the west at a speed of 15 miles per hour. This boat will arrive at the dock at 3:00pm. a) write a function for the distance between the two boats in...
  4. S

    Boats?

    A boat leaves a dock at 3:00 P.M. and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 4:00 P.M. How many minutes after 3:00 P.M. were the two boats closest together?
  5. H

    boats and trains related rates

    A railroad bridge is 200 ft. above, and at right angles to a river. A man in a train, traveling at 20 mph, passes over the center of the bridge at the same instant a man in a motorboat, traveling 30 mph passes under the center of the bridge. How fast are the two men moving away from each other...
  6. N

    [SOLVED] Two boats leave a dock at the same time

    Am I working this problem correctly? Two boats leave a dock at the same time. One boat is headed directly east at a constant speed of 35 knots(nautical miles per hour) and the other is headed directly south at a constand speed of 22 knots. Express the distance d between the boats as a funtion of...
  7. R

    boats acceleration

    Theres a boat that has a mass of 6800 kg. Its engines generate a drive force of 4400 N, due west, while the wind exerts a force of 770 N, due east, now the water exerts a resistive force of 1200 N due east. What is the magnitude and direction of the boat's acceleration? must be in...