http://img445.imageshack.us/img445/4941/untitlediy4.png [Broken] This question leaves me very confused. I'm hoping someone can give me an idea of where to begin because we haven't gone over these problems in class. I understand that kinetic energy is energy that a body has as a result of motion, and is defined as one half the product of a body's mass and the square of it's speed. But how do I express this as an equation given the attached problem? Thanks!