Abyss

The stone fell into the abyss: 2 seconds after we heard it hit bottom. How deep is the abyss (neglecting air resistance)?

(gravitational acceleration g = 9.81 m/s2 and the speed of sound in air v = 343 m/s)

Correct answer:

h =  18.6 m

Step-by-step explanation:

v=343 m/s t=t1+t2=2 s h=21gt12=vt2 h=21gt12=v(2t1) gt12=223432343t1 9.81t12+686t11372=0  t1,2=2ab±D=19.62686±524433.28 t1,2=34.96432212±36.910176236537 t1=1.9458541162516 t2=71.874498356822 h=21gt12=18.6 m



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you want to convert length units?
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Themes, topics:

Grade of the word problem:

Related math problems and questions: