Question

The speed of sound in water is 1500 ms⁻¹ and in steel is 5000 ms⁻¹
(i) Find the distance travelled by sound signal in 3 seconds in steel.
(ii) Find the time taken by sound signal to travel the same distance in water.

Answer 1

I) Speed of sound in steel = 5000m/s

Time = 3 seconds

Distance travelled = speed × time

= 5000×3 = 15000 m = 15 km

II) Speed of sound in water = 1500 m/s

Distance travelled = 15000 m

Distance = speed × time

Time = distance / speed

=> 15000/1500

=> 10 seconds

The time taken = 10 seconds