9. You and your friend, who weighs the same as you, want to go to the top of the Eiffel Tower. Your friend takes the elevator straight up. You decide to walk dn. the spiral stairway, taking longer to do so. Compare the gravitational potential energy of you and your friend, after you both reach the top. O a. It is impossible to tell since you are not given the time it took to get to the top. b. Your friend's gravitational potential energy is more than yours, because he got to the top before you. c. Both of you have the same amount of potential energy at the top. d. Your gravitational potential energy is more because you traveled a greater distance to get to the top. e. It is impossible to tell, since the distances you both traveled is unknown.

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