3. question classical mechanics is fundamentally based on? 1.einsteins theory of relativity 2.newton's laws of motion 3.the universal motion system

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life