As expected, the acceleration of P has both non-zero tangential and normal components. From the equation provided for speed as a function of distance traveled, the speed of P is monotonically ...
Zhuravleva, I. V., Churazov, Eugene, Sazonov, S. Y., Sunyaev, R. A., Forman, William R., and Dolag, K. 2010. "Polarization of X-ray lines from galaxy clusters and ...