Question 1 Report
A cannon is fired from town X,after how long is the sound heard at a town Y 4.95 km away?
[velocity of sound in the air = 330 ms-1]
Answer Details
V = (2X)/t 330 = (2 x 4.95 x 103)/t t = (9.9. x 103/330 = (9900)/330 = (90)/3 = 30 secs