Mass-energy equivalence, encapsulated by the formula E = mc², defines the relationship between energy and mass, asserting that the change in energy is proportional to the change in mass multiplied by the speed of light squared. This principle is foundational in understanding relativistic momentum and energy, which are both dependent on the observer's frame of reference. The discussion highlights that momentum, defined as mass times speed, is also relative, as both mass and speed vary with the observer's perspective. Additionally, the concept of dilated mass is introduced, emphasizing the relativity of energy and momentum.
PREREQUISITESStudents studying physics, educators explaining relativity, and anyone interested in the foundational concepts of mass-energy equivalence and its applications in modern science.
momentum is "mass times speed". Since both mass and speed are "relative", how could momentum NOT be? Likewise, energy is "1/2 mass times speed squared" so it also is relative to the viewer.skoks said:I understand this but I don't understand how momentum can be relative... What is dilated mass?How can energy be relative aswell?