1. Why is Ex (kinetic energy) considered the "energy of motion?" Provide the equation and explain the parts. 2. What is the Ep (potential energy) and what is the general formula for it (explain the parts)? 3. Gravitational potential energy is a specific kind of Ep that we use a LOT. Using the general equation from the previous question, along with your knowledge of the force of gravity, derive a handy formula for gravitational potential energy. 4. A 15000kg locomotive is moving at 12 m/s. What is its kinetic energy? 5. What is the potential energy of a 0.40 kg ball at a height of 9.2 m