In these cold winter months, may people search for fun activities they can do in the snow. One answer that many kids come up with is sledding. However, like most activities, sledding has a lot to do with physics. For instance, when at the top of the hill the sled and sledder have potential energy due to gravity. To find it you would have to multiply the total mass (the mass of the sled and the sledder combined) by the acceleration due to gravity (which is always 9.81 m?s^2) and then by the height of the hill. But when the sled starts to go down the hill, the potential energy is converted to kinetic energy. After all, energy can be neither created nor destroyed, but only converted.