6. Which of the following BEST explains why fossil fuel supplies are limited? D. People are not allowed to use large amounts of fossil fuels.
A. Fossil fuel formed over many many years, and they are being used more quickly than
they can be replaced.
C. Fossil fuels exists in every large quantities, but they are difficult for scientists to
locate.
B. Only small amounts of fossil fuel ever formed and early humans used most of the
available supply

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s