Question

Two border check post are 4.8km a part. a gun is fired from one check post. the time different between seeing flash of gun and it's sound at the second. check post is 14s. find the speed in air
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Answer 1

▪Given that two border check post are 4.8km a part and a gun is fired from one check post the time different between seeing flash of gun and it's sound at the second check post being 14s

▪The speed in air is 342.85m/s.

▪Speed (v) is the ratio of distance (d) to the time (t).

▪Mathematically this can be formulated as v=d/t.

▪Substituting the values as d=4.8km = 4800m and t=14s.

▪We get v=4800/14 = 342.85m/s.

▪Thus the speed of the shot in air between the two border check posts is 342.85m/s.