Which of the following is NOT part of the step test for assessing cardiorespiratory fitness? A. taking your pulse
B. performing the test for 1 hour
C. comparing your results to a reference chart
D. using a 12-inch step​

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?