What best describes the set of focal points of a thin convex lens?

two focal points on opposite sides of the lens, with one point twice as far from the lens as the other point

two focal points on the same side of the lens, with one point twice as far from the lens as the other point

two focal points on opposite sides of the lens, each the same distance to the lens one focal point located either in front of or behind the lens

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