Practice problem
First Law of Thermodynamics — Conservation of Energy
Your friend Arpita bets you that she can make it to the top of the hill in the park before you can, starting in the same place. She takes the long path that goes around the hill in circles so that she can run. You decide to walk directly up the hill instead. Ignoring the energy which was converted to friction and "lost" in other ways, by the time you both get to the top, which of you will have converted more kinetic energy to potential energy?