A meteorite enters the Earth's atmosphere and burns up before reaching the Earth itself. The meteorites' kinetic energy stores are transferred to the surroundings as heat, sound and what else?

One answer could be erosion

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.