Motion

Motion is called change of position like when car come in the motion it changes its place you can say change without any other force. It is described in time, velocity, displacement, acceleration. An object cannot change its velocity till any out force applied on it its described in newtons first law and that call newtons law of motion.More generally, the term motion signifies any temporal change in a physical system. For example, one can talk about motion of a wave or a quantum particle (or any other field) where the concept location does not apply. That was some information about motion which i shared to you hope you like it. 

International system of units

Till 1960 many countries of this world use different system of units . From them two important system first C.G.S and second British engineering system in the C.G.S system the unit of length is cm.unit of mass is gram and unit of time is second and in British engineering system unit of length is foot, unit of mass is slug and unit of time is second in these two systems the unit of time is same. Because of different systems their was many confusions and for this world needed a 1 unit system and its called S.I system.
In 1960 there was a international meeting in Paris and in this meeting many countries say that their should be a one system called S.I and in under that discipline unit of mass and time is meter , kilogram and second keeped. and they are also called basic units.  

What is gravity

In this post i am gong to tell you about the gravity what is it where it comes from what is its work. First i want to explain that gravity is a natural thing which every planet every star have take the example that how it works it works like that if i jump from anywhere i will be fall down its is the work of gravity, but in the space there isn't any gravity so if i jump from any spaceship into space i wont be fall down but i will be be having no any mass in space because in space their isn't gravity gravity gives us power to go to run if there won't be any gravity on planets life cannot grow up and also gravity do another thing it keeps all planets in orbit around sun like earth do with moon.

Man, Physics and technology

As knowledge increases with that human use it in a good way. The trials we did for physics are succeeded in affiliating the different thing in physics topic. As a get aero plane flies in sky, Use of stereo in transistor, knowledge of computer, use of lexer beams for eyes operation, and work of telescopes in space. We can say that physics is the heart of this technological period. Everyone is concerned with physics, the use of nuclear reactor in different countries for the need of energy in the shape of electricity, by attracting at the need of army it needs many technological weapons. the laws which newton found because of these the space ships are running are running around the earth. that is man, physics and technology.          

Physics

If we see around our inviroment than we will find many things, Like when we experiment on matter than in our mind many question will rise. that what is matter why we get it in different condition such type of question is when we comb our hairs and the comb touch any paper so the paper will magnet with it. From olden area these kind of question confuse men, Study of that kind of science that branch or finding the answer of that kind of question called physics.