Final answer:
There have been changes in fundamental concepts in physics, such as time dilation and the conversion of matter and energy. These changes have been driven by advancements in theories like relativity and quantum mechanics.
Step-by-step explanation:
In physics, there have been several changes to fundamental concepts over time. For example, the understanding of time dilation, where the elapsed time for an event can vary depending on the relative motion, is one such change.
Additionally, the realization that matter and energy can be converted into one another is another significant development in physics. These changes have been made possible through advancements in theories such as relativity and quantum mechanics.