Answer:Its B,C, and E man
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is the 3rd graph
        
                    
             
        
        
        
Answer:
50m/s
Step-by-step explanation:
We assum the direction the baseball is travelling to the bat is the positive direction at 20 m/s and is hit in the opposite at a faster speed. The change in velocity is the final velocity minus the initial velocity:

The change in velocity is 50m/s