Asilt fence is shown in the picture. a silt fence operates by intercepting and filtering sediment-laden runoff. it allows the sediment in the water time to settle before the water flows into other areas. the silt fence is also protecting against

a) erosion.
b) acid rain.
c) radiation.
d) weathering.

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?