Question 30
Extension question:
A fishing boat uses an echo to find the distance from the boat to some fish.
A sound is sent from the ship to the fish. The sound reflects back to the ship.
The speed of sound in water is 1500 metres per second.
The time taken for the sound to go from the ship and back to the ship is 0.2 seconds.
Use this equation to calculate the distance from the boat to the fish:
distance = speed × time
Remember that the distance travelled by the sound wave in 0.2 seconds is from the ship to the fish and back again.
A fishing boat uses an echo to find the distance from the boat to some fish.
A sound is sent from the ship to the fish. The sound reflects back to the ship.
The speed of sound in water is 1500 metres per second.
The time taken for the sound to go from the ship and back to the ship is 0.2 seconds.
Use this equation to calculate the distance from the boat to the fish:
distance = speed × time
Remember that the distance travelled by the sound wave in 0.2 seconds is from the ship to the fish and back again.
