Chapter 5 Extra Credit

3. force that results in different amounts of work being expending in moving an object.
4. the force exerted when there is a stretch or compression of elastic material
6. the net work done on an object is equal to its change in kinetic energy
7. the total mechanical energy in a system remains constant as long as the only forces acting are conservative forces.
10. energy acquired by objects upon which work is done
12. force needed to stretch/ compress a string increases proportionally with the amount of stretch
13. work can only be done when forces are parallel to the displacement
16. transfer of energy of an object by a force that causes displacement
17. in the presence of this or air resistance, mechanical energy is not conserved
18. the energy stored in an object due to its mass and position in the gravitational field
19. energy of an object in motion

1. the ratio of force affecting the string to the displacement caused by it
2. rate at which work is done(how quickly)
5. produced when a rise of energy causes atoms to move faster
8. energy stored in an elastic or spring due to compression or stretching(scalar, J)
9. the force that acts between two moving surfaces
11. energy stored in an object relative to a position of zero
14. altering of an object that changes its shape
15. the unit associated with work and energy
20. ability to do work