Una nadadora quiere cruzar un rio de 100 m de anchura en dirección perpendicular a la corriente , pero llega a un punto de la orilla opuesta 20m aguas abajo. Calcula la velocidad de la corriente si ella va a 2 m/s

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?