bicycle

So today I was riding erin’s bike up and down this big hill for fun, and I realized, hey this is physics! As I sat on the bike at the top of the hill, my potential energy, with respect to the ground at the bottom of the hill, was very high. I did not have any kinetic energy, or energy of motion at that moment because I was not moving. As I rode down the hill, my potential energy decreased, and my kinetic energy increased. When I finally reached the bottom of the hill, my kinetic energy was great, and but my potential energy,w ith respect to the ground at the bottom of the hill, was zero. During this ride, the total energy always remained the same. Besides the potential and kinetic energy, I could also feel the wign blowing against me as I rode down the hill. The bike’s tires were also pretty flat and I wasn’t rolling very well. This reminded me of air resistance and friction.