Question

a monkey drops a coconut from the top of a tree he hear the sound of the coconut hitting the ground 2.057
seconds after dropping it if the monkey was 19.6 m above the ground, if the speed of sound is 172xK , find K (g=9.8m/s²)​

Answer 1

$\tt \green{340.87m/s}$

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⠀⠀⠀⠀⠀⠀Solution

${ \huge{ \purple{ \underbrace{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: }}}}$

• Draw Diagram. ( In Image )

T = t1 + t2

$\tt 4.23 \sqrt{\frac{2h}{9} } \: + \: \frac{d}{vs} \\ \\ \tt 4.23 = \sqrt{ \frac{2 \times 78.4}{9.8} } \: + \: \frac{78.4}{vs} \\ \\ \tt vs = \frac{78.4}{0.23} \blue{ \implies } 340.86$

Get Better Answer in Image.

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