Originally Posted by
RossFW
Quoted because it's just so,well, so HUMBER!!!
Humber, you realise that if I walk past the cart while it is motionless relative to the ground, and therefore has a relative velocity to me,that the cart is in motion relative to MY frame of reference?
No, sorry, of course you don't.....
That
means nothing, RossFW
The treadmill has
no ground equivalent. This means that the belt is not the road, but the Earth. This is because the windspeed status must be forced upon the observer. That means the belt is also a privileged and unique perspective. If not then the treadmill collapses to the real world equivalent of a real treadmill, with different objects at different velocities in the same frame. Either way, no motion.