Part A Describe your observations of light traveling from Acrylite into air in the video. Then, compare the relative refractive properties
of Acrylite and alr. Provide a rationale for any conclusions you may come to.

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2 . how much is the spring compressed x from its natural length?