A scientist compares a fossil to another fossil. The comparison gives the scientist information that fossil A is younger than fossil B and C . Which scientific concept is the scientist using? * 1 point
A. absolute dating
B. relative dating
C. the law of superposition
D. the principle of uniformitarianism

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?