Work and Energy

1. In the absence of friction, mechanical energy is _______.
2. Potential energy is ______ energy
6. the energy of an object due to its motion.
7. the energy associated with an object due to the position of the object
10. the sum of kinetic energy and all forms of potential energy
11. Machines with ______ power ratings do the same work in _____ time intervals
12. Net work equals displacement times cosine of the angle between them times _______.
14. The net work done on an object is equal to the change in the kinetic energy of the object.
16. Work is a ______ quantity
18. The SI unite for work

1. The principle that total mechanical energy remains the same in the absence of friction.
3. the potential energy in a stretched or compressed elastic object
4. Power is _____ divided by time interval
5. The rate at which energy is transferred
8. energy that depends on height from a zero level
9. gravutational potential energy depends on _____ times free-fall acceleration times height
13. Kinetic energy depends on ______ and mass
14. The SI unite of power
15. the _____ symbol is called the spring constant
17. Is often associated with kinetic energy