an airplane flies 270km due east, makes a right angle turn, and then flies 440km due north. from the magnitude of the planes displacement from its starting point. neglect the curvature of the earth

1. may 2. september 3. february, and december4. 70°f

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.