The sound power the person generated is 
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<h3>Area of the sound wave</h3>
The area of the sound wave is calculated as follows;
<h3>Power generated</h3>
The sound power the person generated is calculated as follows;
Learn more about intensity of sound here: brainly.com/question/4431819
B- we would need the time to fulfill the formula distance = speed x time
Sound waves are changes in pressure generated by vibrating molecules. The physical characteristics of sound waves influence the three psychological features of sound: loudness, pitch, and timbre. Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived.
It's 12.1 m/s, assuming that's the launch velocity that's given.
For projectile motion, velocity's y-component is parabolic/quadratic. It's x-component is constant, so you don't need to know it.
