Physics 163

Unit 3: Motion in Two Dimensions

Problem Set B

Problem 7:

The pilot of an aircraft (flying at some angle) wishes to fly due west in a wind blowing at 44 km/h toward the south. If the speed of the aircraft in the absence of wind is 163 km/h, in what direction (in degrees) should the aircraft head? Use the counter-clockwise from east convention.

• Read the problem carefully and diagram the physical situation
• Identify known and unknown information in an organized manner
• Take the time to plot out a strategy prior to beginning the solution
• Identify an appropriate formula to use
• Perform step-by-step algebraic manipulations

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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