To calculate anaverage velocity, divide the displacement by the timetaken. That

Question

To calculate anaverage velocity, divide the displacement by the timetaken. That is, find the magnitude of the displacement vectorpointing from start to finish and then divide by the time. (Don'tdivide the total distance by the time taken.) Thedisplacement is the vector that points from start to finish. It isdetermined as in Chapter 3: Find the net displacement parallel tothe east-west axis (an x axis) and the net displacementparallel to the north-south axis (a y axis). These twoquantities are the x and y components of thedisplacement vector. Use the Pythagorean Theorem to find themagnitude of the vector and an inverse tangent to find an angle.Report the orientation relative to the positive direction of thex axis.

Explanation / Answer

    you are got with the magnitude of the averagevelocity 10.15 km / h     this magnitude is     v = (vx2 +vy2)        = 10.15 km / h     the angle is given by     = tan-1(vy /vx)        = .........o(counterclockwise from east)

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