INTRODUCTION ABOUT KINETIC ENERGY.

INTRODUCTION ABOUT KINETIC ENERGY.

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Energy is defined as the ability to do ework.We have different forms of eenergy.
Kinetic energy is one of them. This is the energy a body possesses by virtue of it's motion.
Scientist believed that every substance in the world is made of particles that even the strongest microscope cannot see. These particles are in constant motion. Some substances like water exits in different forms. In each of the states or forms, the compound water is chemically the same. It can be said that the three states of matter for any given substance differ only in the manner in which they are arranged and they are not different in

The theory which deals which deals with the way in which the arrangement of the particles of a substance determine the properties that substances will possess, and particularly the state in which it is likely to be found under a given set of condition is known as the kinetic theory.

KINETIC THEORY STATES THAT:

(1) Everything is made up of tiny particles called atom,ions, and molecule.

(2) These particles are in constant motion so possess kinetic energy.

(3) The particles attract each other.

Increase in temperature causes an increase in average kinetic energy of the particles. Water can exist in three states.
The fundamental difference between these three states of matter in which water exist is the degree of movements of their particles.
The particles in matter attracts each other. In solids the particles attracted each other strongly, in liquid, the attraction is much weaker while in gases the particles hardly attract each other at all.

ASSUMPTIONS OF KINETIC THEORY.

Molecules are in constant motion. The fact, that the molecules are in motion is evident from the fact that if a small quantity of an odorous gas, such as hydrogen sulphide, is liberated at any point in a laboratory the smell soon pervades the whole room.

Kinetic theory makes the following assumptions about a `perfect' gas.

(1) molecules of a gas move in straight line at very great speed until they collide with each other or the walls of the container.

(2) The total volume of the actual gaseous molecules is negligible relative to the capacity of the container.

(3) forces of attraction or repulsion between the molecules of the gas are negligible.

(4) The kinetic energy of the gas measures the temperature of the gas.

REFERENCE.

Jain, Mahesh C. (2009). Textbook of Engineering Physics (Part I). p. 9. ISBN 978-81-203-3862-3., Chapter 1, p. 9

Brenner, Joseph (2008). Logic in Reality (illustrated ed.). Springer Science & Business Media. p. 93. ISBN 978-1-4020-8375-4. Extract of page 93

Judith P. Zinsser (2007). Emilie du Chatelet: Daring Genius of the Enlightenment. Penguin. ISBN 978-0-14-311268-6.