Three children were racing toy cars. they held them at the top of a ramp. when one said, “go,” they all let go. the cars rolled down the ramp and across the finish line. the children timed their cars. the red car finished in four seconds, the white car finished in two seconds, and the blue car finished in six seconds. question: which car rolled the fastest? explain how you know. which car rolled the slowest? explain how you know. if a fourth car was added to the race and came in second, how would you describe its speed?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous