New posts in Reference Frames

Would Foucault's pendulum work on the moon?

Why the formula of kinetic energy assumes that the object has started from an initial velocity of zero?

Does special relativity imply that I can reach a star 100 light years away in less than 100 years?

Centrifugal Force Dilemma

Moment of inertia of 1/4 of a sphere

On what things can two observers agree or disagree?

Does the first postulate of special relativity imply constant speed of light?

Do I have the correct idea of time dilation?

Red- / Blueshifting and relativistic length contraction at $0.8c$ - How would it look?

Why is Microgravity called "Microgravity"?