1. is defined as a force acting over a distance a. power b. energy c. work < -- d. potential energy 3. the unit that represents 1 joule of work done each second is the a. power b. newton c. watt < -- d. mechanical advantage 4. which of the following situations does not involve potential energy being changed into kinetic energy? a. an apple falling from a tree b. shooting a dart from a spring-loaded gun c. pulling back on the string of a bow < -- d. a creek flowing downstream 5. is determined by both mass and velocity a. work b. power c. potential energy d. kinetic energy < -- 6. energy that does not involve the large-scale motion or position of objects in a system is called a. potential energy b. mechanical energy c. nonmechanical energy < -- d. conserved energy need checking over my answers. some i am not sure on.. especially number four.