You push a box across the floor with a force of 30 n. you push it 15 meters in 8 seconds. how much work did you do? how much power did you use? pl answer both parts

34 degrees fahrenheit

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.