Average velocity

A car travels from town A to town B in 90 minutes and from town B to town C in 100 minutes. If town A is at the origin of the coordinate system, town B has cartesian coordinates (20, 80). The unit for distance in this system is miles. Town C is at a distance of 100 units from town B in SW direction. Find the average velocity for the trip from town A to town C by using both the graphical and analytical methods. Report velocity in terms of magnitude in m/s and direction in degree with respect to the positive x-axis (east direction).

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x-component of vector