PHYS 121 Lecture Notes - Lecture 18: Inertial Frame Of Reference
Document Summary
All diagrams taken from "l18_relativity. pdf" on the course canvas website. In an inertial reference frame, an isolated object that is at rest remains at rest and an object in motion keeps moving ata. constant velocity. Quiz: two people at a playground are standing on the ground throwing a ball back and forth. A boy sitting on a slowly rotating merry-go-round observes this. There is also a girl sitting in a high tree and a bird flying overhead at a constant speed observing this. Select the inertial frame(s) of reference: the frame of the boy sitting on the merry-go-round, the frame of the girl in the tree, the frame of the bird flying overhead, none of the above. A: b and c (only if the velocity and direction are constant), a is not because it is changing direction constantly (the velocity must be constant for it to be an inertial reference frame)
