Question

answer for part three are either (less than/equal to/greater than)

Main Menu Contents Grades HW #2 (05/30 Th 11:59 PM) 》 Crossing a river (conceptual) Course Contents Ariver is to be cross by a girl using a row River Assume that the water has uniform velocity, represented above by the vector labeled K. The r shown. Select the direction (i.e., J, or F, or in order to cross the river in the shortest time. You are correct. Your receipt no. is 155-2691 Previous Tries For which rowing orientation will the girl land on the opposite shore directly across from her sta of tries is reduced.) You are correct. Your receipt no. is 155-4668 Previous Tries ct an ansme tor ow acrioss for C is for. Equal to The distance traveled in crossing for D is for J. than ▼ Time to row across for F is for D Equalto . Time to row across for Jis for D Grester thanFor an observer on shore, the speed of the boat for J is for C. Sub Answer You have entered that answer before Incorrect. Tries 8/12 Previous Tries Type here to search DOLL Esc F3 F4 FS F6 F7 Fe 2

Answer 1

1. Time to row across for C is less than for J since the horizontal component of C will be greater than that of J.

2. The distance traveled in crossing for D is less than for J because in case of D, the vertical component of D and river are in opposite direction while in case of J, the vertical components add up and therefore more distance is traveled in this case.

3. Time to row across for F is less than D since horizontal component of F is greater than D. Time to cross is calculated by horizontal component.

4.Time to cross for J is equal to D since horizontal component is same in both the cases.

5.For an observer on shore, the speed of the boat for J is greater than for C because J makes a smaller angle with the velocity of river.