A block is at the top of a frictionless ramp that is 2.0 m long and 0.10 m high at one end. Use the figure and coordinate system shown in the lab manual (and in textbook example 3.4). The block starts from rest and takes 2.5 seconds to travel 1.8 meters down the ramp. a. What is the value of sin ? b. What is the magnitude of the acceleration in the x direction a,? c. Calculate g using this data. It will not be the value you may expect from question la. d. How can g be determined from a plot of a, versus sin 8?