When an object is dropped from the top of a 50-foot tall building, algebra homework help

When an object is dropped from the top of a 50-foot tall building, the object will be h feet above the ground after t seconds, where 1 half square root of 50 space minus space h end root space equals space t. How far above the ground will the object be after 1 second?

A. 34 feet

B. 46 feet

C. 48 feet

D. 3.5 feet