2. You throw a 2 kg ball upward with an initial velocity of 20 m/sec. About 4 seconds later, the ball returns and you catch it.
9.8 m/s
0.0 m/s
o o o o
4.9 m/s
19.6 m/s
CLEAR ALL
What is the magnitude of the velocity at the top of the ball's upward path? (Neglect
Friction and assume on or near the earth's surface.]

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.