ICP Chapter 4 Vocab

2. energy The energy of motion, described by the relationship
4. The SI unit of energy and work, equivalent to a newton-meter.
8. to machines the work output of any machine cannot exceed the work input. In an ideal machine, where no energy is tranformed into heat.
12. Impulse is equal to the change in the momentum of the object upon which the impulse acts.
13. a collision in which colliding objects rebound without lasting deformation or the generation of heat.
14. in the absence of an external force, the momentum of a system remains unchanged. Hence, the momentum before an event involving only internal forces is equal to the momentum after the event.
15. The percentage of the work put into a machine that is converted into useful work output.
16. The time rate at which work is done.

1. the work output of any machine cannot exceed the work input. In an ideal machine, where no energy is tranformed into heat.
3. in the absence of external work input or output, the energy of a system remains unchanged. Energy cannot be created or destroyed.
5. the property of a system that enables it to do work.
6. energy The stored energy that a body possesses because of its position, shape, or state.
7. The product of the mass of an object and its velocity-inertia in motion.
9. The product of the force acting on an object and the time during which it acts.
10. The product of the force and the distance through which the object moves.
11. A collision in which the colliding objects become distorted, generate heat, and possibly stick together.