The answer is A. 50 m/s
I took the test and completed the study guide in class and got it correct.
The answer is C 300,000 kilometers per second
Your answer is friction. Friction between to object slows the object down.
Heterogeneous mixture is a substance that does not have a chemical formula and has more than one fase and the examples are water and oil because of the two different colors of fases, italian dressing is also another example because it has more than one different colors of fases.