Here is the question with two parts The fastest that a human has run is about 12 m/s. a) If a pole vaulter could run this fast and convert all of his or her kinetic energy into gravitational potential energy, how high would he or she go? 7pts b) Using the 1990 pole vault world record of 20 ft. Find the initial speed in m/s needed for the pole vaulter to reach this height. 6pts (This is Problem 24 of chapter 3.) Now I know how to get the KE= 1/2md2. Now I am really confused because the question isn't giving me the mass or anything to work with? How do you even go about starting to solve this problem? On top of that I have no idea how to solve for gravitational potential energy. Haven't even tried to start the second part b) yet. I am not looking to get spoon fed an answer I simply need a little guidance for what I am missing. Doing an online class so it's not easy to sit down with the instructor. Thank you for your time.