The second law of themodynamics says that whenever energy is converted from one form to another in a physical or chemical change a. heat is absorbed b. light is produced c. the second form of energy will always be kinetic d more energy will be present in the second form e. we end up with lower-quality or less useable energy than we started with

The answer would be a

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.