Place the descriptions in the correct categories.
rift valleys
At Convergent Boundaries
At Divergent Boundaries
plates pulling apart
magma breaks through crust
subduction
volcanic mountains
island arc
magma flows from cracks
mid-ocean ridges

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?