A pelican flying along a horizontal path drops a fish from a height of 2.3 m. The fish travels 7 m horizontally before it hits the water below. What is the pelican's initial speed? Answer in units of m/s and keep one decimal place.
a) 6.0 m/s
b) 7.0 m/s
c) 8.0 m/s
d) 9.0 m/s