Speed of sound in water = 1460 ms-1
Time delay = 80s
Distance of enemy ship = ?
Solution:
Total distance covered = speed × time
= 1460 ms-1 × 80s = 116800 m
Time taken is for forward and backward path of sound waves.
Distance of enemy ship = \(\frac{total\,distance \,covered}{2}\) = \(\frac{116800}{2}\) m
= 58400 m (or) 58.4 km