You are sitting in a cart at the top of a hill on a roller coaster. You have 10,500 J of GPE. If your current weight is 539 N, how tall is the hill you are sitting on?

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.