ABurkholder+Physlets+2.2

A. The red ball increases in speed as the time increases. B. Graph A is the right graph. Graph B is wrong because it shows the ball slowing down when it clearly increases. Graph C has a skip which is not possible. C. Graph F is the right graph. Graph D skips which is still not possible and Graph E in the beginning says the ball is increasing in speed which is incorrect because the speed is constant.