You are standing 1000 m from the point where a steel block strikes the sidewalk. How long will It take the sound to reach your ears if the speed of sound in air at `0^@` C is about 333 m/sec. ?

Options

A. 3 seconds
B. 2 seconds
C. 1 second
D. 5 seconds.

Answer

A

Explanation

Speed of sound(S)=`"distance (x)"/"time (t)"`
when x =1000 m and s =333 m/sec
S=x/t therefore t=x/s
`t="1000m"/"333m/sec"`=3 sec