Question

A forensic scientist (CSI) is trying to find a weapon thrown off a bridge into the lake. Assume it is thrown horizontally and it sinks straight down once it hits the water. The bridge height is 15 meters and a normal throwing speed is 23 m/s. How far from the bridge should you search?

so I found t
15m=1/2(9.80)t^2
t=1.75 s

do I just multiply 1.75s x 23m/s
answer: 40.25m?
oobleck
correct