Sir isaac newton determined that gravity has a fixed acceleration on earth. the earth pulls objects towards it with a fixed acceleration at -9.8 m/s2. this is a as it states a scientifically accepted fact about the natural world.

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.

the answer is c. hope this