Please help me with this HARD Physics Question!?

Question

At O degrees celcius a cannon fires a shell at 1324m/s.

a) how fast is the shell travelling relative to the sound wave from the explosion?
*b) how far away from the cannon is an observer who sees the shell pass by 2.00s before the sound of the explosion arrives?

Answer 1

if u noe da velocity of sound in air at o de celcius then u can find da relative speed.
speed=dist/time. dist=speed*time
dist is constant.
d=speed of sound * time taken for sound to reach obs.
d=1324*(time taken for sound-2)
then equate
speed of sound*time for sound= 1324*(time for sound-2)
find ttime for sound.
then dist=speed of sound *time of sound.

Answer 2

The speed of sound in air is approximately

v = 331 m/s + (0.6 m/s oC)•T

where T is the temperature in C. So in your problem the speed of sound is 331 m/s.

Now distance = velocity x time.

d = ( 1324 m/s ) ( t ) = ( 331 m/s ) ( t + 2.00 )

Solve the second equality for the elapsed time t, then use either to find the distance d.

Answer 3

it's a trick question, the answer is 4,000,000,000,000,000,000,000,000,000 (4 googles)