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Echo

The drawing s...

Question

The drawing shows a ship 800 m from a cliff. A gun is fired on the ship. After 5 seconds the people at the front of the ship hear the sound of the gun again.

(a) What is the name of this effect ?

(b) What happens to the sound at the cliff ?

(c) How far does the sound travel in 5 seconds ?

(d) Calculate the speed of sound.

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Solution

(a) Echo

(b) The sound gets reflected

(c) 1600 m

(d) speed of sound =distance/time
=1600/5=320m/s

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