So is F=ma valid? What if a=0, as when a body is moving at constant velocity? Then is F=0? I don't think so. If I am struck by a car moving at constant velocity, I guarantee you that I will feel a force. Perhaps there's something I'm missing here.
0 / 0
The light by which we see distant deep space objects left those objects thousands, millions, even billions of years ago, yet we speak of them in the present tense, Perhaps this is just a convenience; they may be more accurately referred to in the past tense. In any event, given that the...
The light by which we see distant deep space objects left those objects thousands, millions, even billions of years ago, yet we speak of them in the present tense, Perhaps this is just a convenience; they may be more accurately referred to in the past tense. In any event, given that the light...