Help! Physics question!
Which of the following represents an example of refraction?
A. The passenger-side mirror on your car says, "Objects may be closer than they appear."
B. You go to a carnival and buy a fiber-optic flashlight that emits different colors of light from the tips of the skinny fibers.
C. You drop your watch in a shallow pool and bend down to pick it up. You reach directly towards it, but your hand misses it.
D. As you move away from your bathroom mirror, your image seems to get smaller.

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