Seafloor spreading<span> is a process that </span>occurs<span> at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. </span>Seafloor spreading<span> helps explain continental drift in the theory of plate tectonics.
Hope this helps</span>
        
                    
             
        
        
        
12-15 billion years i think
 
        
             
        
        
        
Answer:
3.1 m/s²
Explanation:
Apply Newton's second law:
∑F = ma
40 N = (13 kg) a
a ≈ 3.1 m/s²
 
        
             
        
        
        
In his celebrated Second Law of Motion, Newton wrote:
             Net force  =  (mass) x (acceleration).
By the process of "plugging in numbers", we can write
             1255 N  =  (41 kg) x (acceleration)
Now, after dividing each side by (41 kg), we have
             (1255 N) / (41 kg)  =  acceleration.
But  (1255N)/(41kg) = 30.61 m/s² .
So unless we have carelessly blooped the calculations somewhere,
that  30.61 m/s²  is the answer we're looking for.