Suppose the Position Function for a Free-Falling Object on a Certain

Multiple Choice

Suppose the position function for a free-falling object on a certain planet is given by $s ( t ) = - 16 t ^ { 2 } + v _ { 0 } t + s _ { 0 }$ . A silver coin is dropped from the top of a building that is 1372 feet tall. Determine the average velocity of the coin over the time interval $[ 3,4 ]$ .

A) $- 113 \mathrm { ft } / \mathrm { sec }$
B) $80 \mathrm { ft } / \mathrm { sec }$
C) $112 \mathrm { ft } / \mathrm { sec }$
D) $- 112 \mathrm { ft } / \mathrm { sec }$
E) $- 80 \mathrm { ft } / \mathrm { sec }$