It's impossible to definitively say who was the first scientist of physics. The field has evolved over thousands of years, with contributions from many cultures and individuals. Here's why:

* Ancient Roots: Physics has roots in ancient Greece with philosophers like Thales, Democritus, and Aristotle. These thinkers made observations and developed theories about the world, but their methods didn't always align with modern scientific practices.

* Early Civilizations: Other civilizations, like the Babylonians and Egyptians, also made significant contributions to astronomy, mathematics, and engineering, which are foundational to physics.

* The Scientific Revolution: The scientific revolution, starting in the 16th century, marked a shift towards experimentation and mathematical analysis. Key figures include Galileo Galilei, Johannes Kepler, and Isaac Newton, whose work established the foundations of modern physics.

Instead of focusing on "first," it's more helpful to consider the evolution of physics and recognize the many individuals who have contributed to its development over time. Some key figures you might study include:

* Ancient Greece: Thales, Democritus, Aristotle, Archimedes

* Medieval Era: Ibn al-Haytham (Alhazen), Roger Bacon

* Scientific Revolution: Galileo Galilei, Johannes Kepler, Isaac Newton

* Modern Physics: Albert Einstein, Niels Bohr, Marie Curie

Remember, science is a continuous journey built on the work of countless individuals across history.