Across
- 1. The quantity of matter in an object. Stays the same everywhere.
- 6. The property of a system that enables it to do work.
- 9. A push or pull.
- 11. The product of the mass of an object and its velocity.
- 12. The force put on the object by gravity.
- 14. The energy of motion.
Down
- 2. The distance traveled per unit of time.
- 3. The time rate of work: Power=work/time
- 4. The rate at which velocity changes with time.
- 5. A measure of mass per volume for a substance.
- 7. The percentage of work put into a machine that is converted into useful work output.
- 8. A vector quantity that specifies both the speed of an object and its direction of motion.
- 10. A resistive force caused but two objects rubbing together.
- 12. The product of force and the distance through which the force moves:w = fd.
- 13. The scientific unit of force.