A Heavy Ball Is Dropped into a Lake from a Height

Multiple Choice

A heavy ball is dropped into a lake from a height of 30.0 m above the water.It hits the water with a certain velocity and continues to sink to the bottom of the lake at this same constant velocity.It reaches the bottom of the lake 10.0 s after it was dropped.How deep is the lake?

A) 182.5 m
B) 87.4 m
C) 29.6 m
D) 143.1 m
E) 209.7 m