physics
posted by christina .
Two Astronauts A and B are working in the space shuttle in the space.Suddenly the hammer falls from the hands of astranaut in space. who will hear most sound,Astranonaut A or B .and why?

physics 
drwls
Are they both inside the shuttle, where there is an atmosphere? Is one of them outside "in space"? Dropping a hammer will not make it fall, in either case.
You have not adequately defined the locations of the two astronauts.
Sound cannot be heard in space. If a hammer hits the spacecraft, it can be heard by people inside, where there is an atmosphere to propagate sound. Sound can also travel through the walls of the spacecraft if a wall is hit by an object.
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