Superman is at rest in space when he throws an asteroid that has much more mass than he does. Which moves faster, Superman or the asteroid? Asteroid

Superman

Both move at the same speed

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

The answer to this is decibel

No it doesnt because it can be any number.