Consider the experiment of problem 1.27, in which a frictionless puck is sliding straight across a rotating turntable through the center 0. (a) write down the polar coordinates r, 0 of the puck as functions of time, as measured in the inertial frame s of an observer on the ground. (assume that the puck was launched along the axis 0 = 0 at t = 0.) (b) now write down the polar coordinates r', 0' of the puck as measured by an observer (frame s') at rest on the turntable. (choose these coordinates so that 0 and 0' coincide at t = 0.) describe and sketch the path seen by this second observer. is the frame s' inertial