PHYS 114 Lecture Notes - Lecture 7: Jet Ski, Relative Velocity, Moving Walkway
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A frame of reference is a coordinate system (x and y axes) for which an observer is at rest with respect to the origin. Position, direction, velocity, y acceleration, etc are measured with respect to a particular coordinate system, or a frame of reference. x. 4 ab denote (cid:16894)velocity of a relative to b(cid:16895). Reversing the subscripts of a velocity vector reverses the corresponding velocity vector. Pb measured by observer b in frame of reference sb, and sb is moving at v. Ba with respect to frame of reference sa. The velocity of the particle measured by observer a in frame of reference sa, v v. On the left-hand side of the equation we have the subscript. On the right-hand side we have two sets of subscripts, pb and. Note that a pair of b"s has been inserted between the p and the a v. Pay attention to the ordering of the subscripts.
