On his way to class, a student on a skateboard is accelerating on a downhill stretch. Which of the following statements is true? (Select all that apply.) A. The skateboarder's acceleration is perpendicular to the net force.
B. The skateboarder is moving in the direction of the net force.
C. The skateboarder's acceleration is in the direction of the net force.
D. The skateboarder is subjected to a net external force in the direction of motion.

B is correct

Explanation:

Because of gravity

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

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