Question:Sound travels at 330 metres a second.How many kilometres away is a thunder cloud when its sound follows the flash after 10 seconds ? 

A 3.3 
B 33 
C 0.33 
D 3.33 

+ Answer
A 

+ Explanation
Distance `= (time xx speed)`

         `= (330 xx 10) m`

       `= (330 xx 10)/(1000) km`

       = 3.3

+ Report

Irin Moni

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