a pitcher requires about 0.1 second to throw a baseball. if the ball leaves his hand with a speed of 40 m/s, what is its acceleration?

What are the two main ideas of this passage? museum experts feel that museums must change to attract visitors. museum experts care more about the number of visitors than about history. museums that display artworks and exhibits do not make families welcome. museums like colonial williamsburg make learning about the past fun. museums in the united states are different than in other countries.