Question

A stone is dropped from a height of 78.
4 m above water surface. if the splash sound is heard after 4.26 s what is the velocity of sound in the air(IX class )(3mark question)

Answer 1

Answer:

301.50

Explanation:

t1 is time for stone to fall and t2 is time for splash to be heard.

using equation of motion we get the time of fall.

time for splash to be heard is t2.

t1 + t2 =4.26s

using formula of velocity= distance / t2

we get velocity of sound.

check solution in image