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.

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.