In a town blast take place after 10minutes and a train comes with velocity 72km/hour twards the town when the velocity of sound is 380metre/second, determine the time taken of two cosequtive sound of blast for a passenger in this train?
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In 30 sec sound covers the same distance as train in 10 min.
In 30 seconds sound covers 330*30=9900m=9.9 km, --> hence in 10 minutes train covers 9.9 km --> in 1 hr train covers 9.9*6 km= 59.4 km.
In 30 seconds sound covers 330*30=9900m=9.9 km, --> hence in 10 minutes train covers 9.9 km --> in 1 hr train covers 9.9*6 km= 59.4 km.
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