Work and Energy

2. is the energy of motion
4. is the sum of potential energy and kinetic energy.
5. SI unit of power
7. the difference between the final and initial position of a point
8. usually developed by a machine or engine placed either within or external body
10. used as measuring unit of work
11. is the component, perpendicular to the surface of the contact force exerted on an object by, the surface of a floor or wall, preventing the object from penetrating the surface.
13. results from equal and opposite forces acting on two different points of a rigid body
15. SI unit of time.
16. is energy which results from position or configuration
17. other term for initial velocity

1. is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other
3. is a property of a physical body which determines the body's resistance to being accelerated by a force and the strength of its mutual gravitational attraction with other bodies
4. defined as the ratio of the output if useful power produced by the machine to the input power supplied to the machine.
6. is defined as the amount of work or the capacity of the machine to perform per unit time
9. is the product of force and displacement.
10. he developed the steam engine
11. is also called joules
12. English unit of power
14. ability to do work.