Given radius is 1.45 km
Now as they trevelled two third of the circle then if we will join the start point as well as end point we will get a chord to the circular path. The chord length AB will be the displacement.
This chord will substain 120° at the center hence we get an triangle whose 2 sides are radius and one is chord and angle between radius is 120° as shown in figure
Hence displacement is 2.5115 km
I am not solving for direction as u have already marked that correct
One afternoon, a couple walks two-thirds of the way around a circular lake, the radius of...
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