Earth is revolving around the Sun at a great speed. Our Galaxy is also moving away from other galaxies at a great speed and so on and so forth there are many kinds of motions that we are subjected to ( earth's rotation, galaxy's rotation etc.). Plz tell 1. Are all these motions uniform (steady) that we feel no force? A physics professor once told me (though unofficially) that there is no 'steady' motion in this universe. 2. Even If all this motion is 'uniform', what is the reason that we don't feel any kind of force and live as we are living on a stationary earth ( i.e. we are not thrown off at tangents when the earth encounters a curve in it's elliptical path etc.)? Thanks.