Answer:
The kilogram (kg) is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015 ×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the meter and the second are defined in terms of c and ∆νCs.
 
        
                    
             
        
        
        
 
Jupiter i hope it is right answer
 
        
             
        
        
        
Answer:
i think its B sorry if its wrong
 
        
                    
             
        
        
        
Average speed=total distance travelled/time