Question

an underwater (but near the surface) explosions is detected by sonar on a ship 50s before it is heard on the deck. if sound travels at 8000ft/s in water and 1300ft/s in air, how far is the ship from the explosion?

Answer 1

how do i set this up?

Answer 2

set up equations
\[d = 8000t\]
\[d = 1300(t+50)\]
set equal and solve for "t" , then plug back in to get distance "d"

Answer 3

i have 1300t+65000