1.

A man fires a gun 150 m from a cliff. A second man who is standing 300 m further away from the cliff hears the gun 1 second after he sees the flash. The second man will hear the echo from the cliff

A. 1 second after seeing the flash
B. 2 seconds after hearing the gun
C. 2 seconds after seeing the flash
D. 4 seconds after hearing the gun.
Answer» D. 4 seconds after hearing the gun.


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