19. A ball is thrown straight down from the top of a 230-ft building with an initial velocity of -30 ft per second. The position function s(t) = 16 + vt+50. What is the velocity of the ball after 3 seconds? a. The velocity after 3 seconds is -78 ft per second. b. The velocity after 3 seconds is -66 ft per second. c. The velocity after 3 seconds is -126 ft per second. d. The velocity after 3 seconds is -18 ft per second. e. The velocity after 3 seconds is -252 ft per second.