The period in adolescence in which teenagers experience rapid physical growth and hormonal changes is a. puberty. b. menarche. c. diffusion. d. preconventional.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the dependent variable in galileo's experiment?