A girl performed 50 J of work lifting a heavy box. It took her 5 seconds to lift the box. What was her power?
O A. 250 W
OB. 50 W
O C. 45 W
D. 10W
SUBMIT

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?