How does the angle of a track influence model car speed? Car track slope angle () average speed (ft/sec) 0 1.3 10 3.8 20 6.2 30 8.0 40 8.9 50 8.9 Identify the dependent variable [ Select ] the independent variable [ Select ] V [ Select ] and the control grou in the table 50 degree angle of track slope shown above 0 degree angle of track slope 8.9 ft/sec average speed Next