When one bumper car hits another, how does the reaction force affect the first car?
a: the car comes to a stop
b: the car moved in the direction opposite of the action force
c: the car moves in the same direction as the action force

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?