I have great interest in physics, which is the natural science that involves the study of matter.
That was my worst subject in school! It always seem way to compex for me
Yep its quite complex since its one of the most fundamental scientific disciplines.
Do you know who they consider the most knowledgeable person in the world for physics? 
Probably Stephen Hawking, since he contributed to advances in the understanding of electromagnetism.
What else can you tell me about Physics?
, and certain branches of mathematics, were a part of natural philosophy, but during the Scientific Revolution in the 17th century these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy.
Advances in physics often enable advances in new technologies
Physics
Physics (from , from "phýsis" 'nature') is the natural science that studies matter, its motion and behavior through space and time, and that studies the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves.
Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps "the" oldest. Over much of the past two millennia, physics, chemistry, biology