25. one point, from Lecture 25, a group question, short answers

(a) .2 Principle of Equivalence. State Einstein's Principle of Equivalence. (.1) Give an example which clearly illustrates it, explaining how it does so. (.1)

(b) .4 Principles of Inertia. State Newton's First Law. (.1) State Einstein's Principle of Inertia. (.2) Now relate the two to show that Newton's First Law is a special case of Einstein's Principle of Inertia, good only in flat spacetime. (.1)

(c) .4 Dynamics and Kinematics. In Unit 1 we first discussed classical kinematics then classical dynamics. Now we've gone through some relativity. Which of the two (kinematics or dynamics or both) is altered by special relativity and why? (.2) Which is or are altered by general relativity and why? (.2)

Revised October 26, 1997.