why is the total velocity of a roller coaster zero at the end of the ride? how does its speed vary with its location

i think it is dna, i'm not totally sure but i think it might be.

it takes hundreds of years to become stable.

if you have another question lmk.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.