| A | B |
|---|
| orbit | the path of an object around another object |
| weightlesness | a condition in which the pull of gravity is balanced by other motion |
| gravity | the force that exsits between any rwo objects |
| rolling friction | friction that results when around object rolls over a surface |
| mass | the amount of material an object has in it |
| satelite | object that moves, or revolves,around another object |
| sliding friction | friction that results when two solid surfaces slide across one another |
| air resistance | the opposition to motion caused by air particles |
| to break free from earth's gravity you must go | 40,000 kilometers per hour |
| would you be able to kick a ball farther on the earth or on the moon? | moon |
