4. Explain how you can use the values of ET and Egon the graph to determine the rock's maximum height. 5. How much kinetic energy should the rock be launched with to reach a maximum distance of: i. 3Re ii. 6Re 6. With what velocity should the rock be launched to reach a maximum distance of 4R.? 7. Complete the chart again, but now the rock has an initial velocity of 1.2 x 10# m/s. Distance from Eg Ek velocity ET centre of earth Re 2Re 3Re + 4Re 6R. 8Re Really, really far + 8. Plot a graph that shows Es, Ek and ET as a function of distance