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help with quick physics question?!?
1) How long would it take a plane flying at Mach 2 (at STP) to travel 180 km?
2) There i a concert hall and the total length from the stage to the back of the hall is 80 m. What time difference will occur between those listening in the front near the stage and the seats in back at 20 degrees celsius?
*please show all work and equations used*
1 Answer
- JohnLv 68 years agoFavorite Answer
I'm taking the speed of sound to be 340 m/s (see link)
mach 2 would therefore be 680 m/s, or 0.68 km/sec
so to fly 180 km would take 180/0.68 sec = 265 seconds, or 4 minutes 25 sec.
Speed = distance/time, so time = distance/speed
In the concert hall, time = distance/speed = 80/340 = 0.24 sec
Source(s): http://en.wikipedia.org/wiki/Speed_of_sound
