Consider two iron rods of about 10 metres separated by 10 metre. They are in series position and not connected in anyway. If the rods are passing nearby an observe with a velocity of 90% speed of light, then what would he observe? 1) does the separation between the rods (ie 10m) undergo length contraction? 2) What must the velocity of the rod if it appears half of its original length? 3) at that speed do every object appears half of its original length? 4) what will happen if these rods are connected with a tiny there's? Do the whole system appear contracted???