Answer:
The forces involved in a collision are equal in size and directed in the opposite direction, and they accelerate both objects. Each object accelerates equally in collisions with things of equal mass.
Explanation:
 
        
             
        
        
        
The  branched  structure  isomer  will require   less  energy  to  melt  than the straight  chain  isomer
    explanation
 Branched  structure  isomer    has  weak  intermolecular  forces  of attraction  as  compared  to  straight  chain  isomers.  In addition the  branched  isomer  has  a  low boiling point as  compared to  straight chain isomers. Since   boiling require  the of  the  intermolecular  forces tend to have  lower  boiling  point   than straight chain
        
             
        
        
        
The energy would increase
b) increase kinetic energy