Q. Suppose the x-velocity of the car at any time t is given by the equation = 60 / + (0.5 3 ) 2 (a) Find the change in x-velocity of the car in the time interval 1 s to 3 s. (b) Find the average x-acceleration in this time interval.

4. now look at the green lines you created by connecting the three boiling point data points and the three melting point data points. for each of these lines, describe any trends you see. 5. locate the elements on your periodic table that you circled in green on your graph. what term or description would you use to identify these elements with respect to the periodic table? 7. using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers.