Question

please provide me methods of finding solution of conversion of acceleration into kelometers

Answer 1

acceleration if it is specified as  a  meters / second then
then  acceleration =  (a /1000  km) in one sec .   
For  one hour  that is 3600 seconds, it will be  ( a / 1000 ) * 3600    kmph
   =  a * 18 / 5  kmph

In the same way, If acceleration is specified as  a kmph,  then it will be  a * 5 /18  m / sec
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Conversion from  m/sec to kmph  =>  multiply by 18/5 or 3.6
Conversion from kmph to m/sec  =>  divide by 3.6