Dao makes a table to identify the variables used in the equations for centripetal acceleration. a 2 column 5 rows. the first column is labeled variable with entries a subscript c baseline, t, r, v. the second column is labeled quantity with entries blank, x, blank, y. what quantities belong in cells x and y? x: centripetal acceleration y: period x: tangential speed y: radius x: radius y: centripetal acceleration x: period y: tangential speed