Are models of atoms able to be changed as more information is uncovered

yes this could happen. hope that helps. thank you so much, try to search for this in Google .

The bottle's speed is 7.8 percent of the ball's initial speed.

Explanation:

conservation of momentum

Let v be the initial ball velocity

The ball has a momentum change of

p = 0.15(-0.3v - v) = -0.195v

As the ball lost that much momentum, the bottle must gain the same magnitude of momentum

0.195v = 2.5(v' - 0)

v' = 0.078v