The distance quantity/ measurement must be squared.
The answer is:
d) the sound originates from a vibration.
The explanation:
The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. The sound source creates vibrations in the surrounding medium. As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound, thus forming the sound wave.
Explanation:
Recall the equation for time is distance divided by speed. Here you can use that to solve for "t".
Objects are known to go down because of a unbalanced force