A=f/m
A=900/425
A=2.18 
To determine acceleration you divide the force by the mass.
        
                    
             
        
        
        
submarinismo is scuba diving but Bueco is dive
 
        
                    
             
        
        
        
20.4 years is 20.4/10.2 = 2 half-life cycles, which means a quarter of the starting mass or 15.2 g will remain after this time.
        
             
        
        
        
Answer:
Skeletal system, muscular system
Explanation:
Skeletal system:
bones
Muscular system:
muscles
Together, they work together and create the musculoskeletal system.