assuming that the air temperature is constant, what happens to a hot air balloon if it goes too far up in the atmosphere , where
the outside air pressure is much less than the inside are pressure of the balloon? . . a. it bursts. . b. it loses air . . c. it burns up. . d. gravity begins to pull it back down to earth
An object that is moving wants to stay moving in a straight line. It takes an outside force acting upon it to change its direction or cause an acceleration.
