Physics is the science of observation of the world around us thus the study of physics looks into much of the natural world around us the study of physics can be divided into major topics which include: mechanics, properties of matter, thermal physics, waves, optics electricity and magnetic and atomic physics: but all these topics are related to two main ideals matter energy
Physics knowledge is the result of work of many scientists who have built and tested theories about matter and energy to obtain result that are reliable from experiments accurate measurements is paramount hence physics ensures the methods used in measuring physical quantities is accurate. A physical quantity is a quantity that can be exactly measured quantified and give a unit, in other words we need two things to specify a physical quantity the number of quantity and its unit of measurements, way back in time scientist at different place use different standards for their measurements of physical quantity. The obvious implications of this is that scientist we're unable to agree with the result of their measurements.
Physics has really made the world a better place From the discovery of matter to its properties we can acquire many things Take example of energy. Energy is what enables us to work but it doesn't stop there energy is gotten from many sources and can be used in many ways Energy can be gotten from biomass (that's dead plants and animals) which can be converted to different forms of energy like light energy or electricity, energy can also be made from the sun which is the major source and can be converted into other forms Physics knowledge has made all this know to us over the years