School Days

School has started not very long ago and I, am already feeling the homework stress. Yesterday, I was faced with a mountain of homeowrk and without realising so, our class had created a class-wide connection through phone calls due to a peice of homeowrk. In the end, all those who had done it gained the favour of our english teacher. Well, so far I am doing fine including walking home from school. (I feel stronger) We got new desktops today, those plastic things were used during the PSLE and they all looked new and they gave our desks a new, clean, shiny look)the plasic was those reflective types). Anyone can tell me what is the difference between Kinetic energy and Potential energy?