roadrnr2837 roadrnr2837

06-03-2024
Physics

contestada

A construction worker's helmet slips and falls when he is 78.4 m above the ground. He hears the sound of the helmet hitting the ground 4.23 seconds after it slipped. Find the speed of sound in air.
a) 16 m/s
b) 18 m/s
c) 20 m/s
d) 22 m/s

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