Hello there! 
'Parental generation' is the term which he used. Hope I helped. 
        
             
        
        
        
They can conclude that the epicenter is the same distance from both recording stations.
        
                    
             
        
        
        
Answer:EVERY OBJECT REMAIN AT THE STATE OF REST IN A UNIFORM MOTION UNLESS AN EXTERNAL FORCE ACTED UPON IT
Explanation: