Physics 163

Unit 3: Motion in Two Dimensions

Problem Set B


Problem 4:

A boat heads due east directly across a 116-m wide river. The water flows due south with a speed of 2.1 m/s with respect to the shore. The boat speed with respect to the water is 2.8 m/s. Determine the magnitude of the velocity (in m/s) with respect to the shore.






A discussion of the principlesof relative motion and of the basic strategy for solving such problems is provided on the Set B Overview Page.

Detailed information about and discussion of the strategies for solving riverboat problems and other relative velocity problems is provided online at The Physics Classroom.


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