PLEASE CLEARLY ANSWER ALL 3 PARTS:
3. Using at least one of Einstein's \"thought-experiments\",explain how special relativity addresses how it is possible forobservers in two different inertial reference frames to “disagreeâ€about time and distance intervals.
4. Describe how special relativity explains the conditions underwhich classical mechanics breaks down.(When would you, as anobserver begin to notice the effects of time dilation and lengthcontraction?)
5. In the early 20th century, the law of conservation of masswas replaced by the law of conservation of mass-energy. Why wasthis change needed, and how does E=mc2 relate to thespecial theory of relativity?
