Unit 3: Motion in Two Dimensions
Problem Set B
A river flows due east at 2.4 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 7.2 m/s due north relative to shore. What is the magnitude of the velocity of the boat (in m/s) relative 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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