
The ball reaches its maximum height after 3.5 seconds, and the maximum height is 61.025 meters.
 
        
             
        
        
        
Answer: B
Step-by-step explanation:
 
        
                    
             
        
        
        
G2=g1*2
g3=g1*2²
196=x*4
/4        /4
49
        
             
        
        
        
Answer : 
no. of days used to repair 1250m of road = 5 
no. of days used to repair 1m of road = 5/1250 
no. of days used to repair 8000m of road (8*1000m ) = 5/1250*8000= 32 days