Question

A river is t crossed by a boy using a row boat Ri el Assume that the water has uniform velocity, represented above by the vector labeled K. The rowing speed of the boy and a set of possible orientation of his boat are also shown. Select the direction (i.e., H, or J, or ) in order to cross the river in the shortest time. (Notice that the number of tries is reduced.) You are correct. Your receipt no. is 154-1925。) Previous trie For which rowing orientation will the boy land on the opposite shore directly across from his starting position, neither upstream or downstream. (Notice that the number of tries is reduced.) You are correct Your receipt no. is 154-223 Select an answer for each below Less thenTime to row across for D is for H Less thanTime to row across for D is.. for J Greater than For an observer on shore, the speed of the boat for D is.... for ] Less than Time to row across for F is.... for H Equal toThe distance traveled in crossing for H is.. for D Incorrect. Tries 5/20 Previous Tries Submit Answor

Answer 1

This answer is based upon the vector addition of river velocity with the rowing velocity of boat.

* As it is upstream along D and downstream along H, so time to row across for D is greater than for H

* As D is more upstream than J so time to row across for D is greater than for J

* Speed of boat for D is smaller than for J

* Less than

* Greater thanks