Desde una avionta que vuela a 800m un paracaidista se deja caer libremente faltando 250 m para llegar al suelo abre su paracidas calcular: A. el tiempo que cayo libre mente el paraciadista
B. la velocidad que llevaba el paracaidista al momento de abrir el paracaidas

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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.