Matter is a thing. ex: paper. notice how paper can be written on. notice how it is ...well, THERE. now notice light. the light is not atoms. it is electricity that does weird stuff to create a big enough source of energy to be a source of light. sorta like fireflies
Their "airspeeds" (speed through the air) are equal, but the one traveling in the same direction as the jet-stream appears to move along the ground faster.
