Work & Kinetic Energy

Without energy the world would be

Cold, silent, still,

what are the fundamental types of Energy

Kinetic and Potential

What is the type of energy characterized by kinetic energy in microoscoping levels ?

Thermal Energy

What are the 4 fundamental Energies

Potential, Kinetic, Chemical, Elastic Potential

Since it cannot be created nor destroyed it is ..

Conserved quantity

What is the basic energy model

The overview of energy and how i interacts with the environment

What is a system

A collection of interacting objects

How does energy change from type to type

With interaction

What type of energy is uncommon to convert back

Thermal energy

In what two ways does energy transfer

Through heat or work

Why is energy aproach in word problems important ?

It gives a way to solve the problem of classical mechanics

Definition of work

The force acting on an object times the distance over which that force is excerted

Definition of the unit of work ?

The amount of work done when a force of 1N is excerted over a distance of 1 meter

Which component of a force is used in calculating work?

The component of the force that is parallel to the displacement

In what case is negative work a possability ?

When the force and the displacement are in opposite direccions

In the work equation w=Fxcos0 what does theta represent ?

The angle the force and displacement make with each other relative to the x-direction

What is an example where the net work is equal to 0 ?

A person lifting a ball

What is an example where there is no work done ?

When it is perpendicular, carrying a backback while walking forwards

Energy

The capacity to do work

Work-Energy theorem

The net work done on an object is equal to the kinetic energy transfered

What is a smaller unit of energy

Electron Volt

Kinetic energy is a type that is….

Energy of motion

The kinetic energy of an object =

the work the object can do in being brought to rest

Power …

The rate at which work is done

killowat - hour

The amount of work you can do in an hour when doing it at the rate of a killowat

Under what special circumstance does work = m a x

when the force is constant and acts along the displacement