Hello! I am reading GR and got confused about the principle of General Covariance. The principle of General Covariance says that the laws of physics take the same form in all reference frames. Since the laws are same in all reference frames, any experiment performed should give identical results in all reference frames. But this is not true since if I release a ball in an inertial frame it remains stationary but if released in an accelerated frame it speeds up. Am i not understanding the meaning of General Covariance?