As a Speeding Train Crosses a Trestle Over a Deep

Multiple Choice

As a speeding train crosses a trestle over a deep gorge, a child drops his toy plane from the window.The path of the toy plane is modeled by , where y is the height above the floor of the gorge and distances are measured in feet.How far will the toy plane travel horizontally before it hits the bottom of the gorge? [Note: The toy plane does not glide; it "drops like a rock."]

A) 6.0 ft
B) 10 ft
C) 25.7 ft
D) 110 ft
E) 660.0 ft