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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A commuter airplane starts from an airport and takes the route shown in Figure P1.71. The plane first flies to city A, located 175 km away in a direction 30.0° north of east. Next, it flies for 150. km 20.0° west of north, to city B. Finally, the plane flies 190. km due west, to city C. Find the location of city C relative to the location of the starting point.

images

Figure P1.71

To determine
The location of city C relative to the location of the starting point.

Explanation

Given Info: The plane flies to city A is 175km at 30°  North of East . Then the plane flies to city B is 150km at 20°  West of North . Finally, the plane flies to city C is 190km due to west.

Explanation:

The location of the cities is depicted below:

The net displacement along x direction is,

Rx=[(175km)cos(30°)]+[(150km)cos(110°)]+[(190km)cos(180°)]=89.3km

The net displacement along y direction is,

Ry=[(175km)sin(30°)]+[(150km)sin(110°)]+[(190km)sin(180°)]=229km

Formula to calculate the location of the city C from the starting point is,

R=Rx2+Ry2

  • R is location of city C from starting point
  • RxandRy are the x and y component of the location

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