Jhooper From United States of America, joined Dec 2001, 6197 posts, RR: 12
Reply 1, posted (11 years 12 months 4 days 21 hours ago) and read 795 times:
Simple. Sound travels much slower than light. So as you see the plane, the light waves have traveled so fast (about 186,000 miles per second), but it will still take the sound much longer to reach you (since the sound waves only travel about 700mph).
Hope this helps.
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