Assuming north as positive direction, the initial and final velocities of the ball are:

 (with negative sign since it is due south)

the time taken is 

, so the average acceleration of the ball is given by

And the positive sign tells us the direction of the acceleration is north.
 
        
             
        
        
        
Answer:
2,250J
Explanation:
W = Fs = (450)(5) = 2,250
 
        
                    
             
        
        
        
Answer:
The answer to this is falling all the way through the Earth is impossible, since its core is molten. ... As you approached the center of the earth the pull of gravity would decline and eventually (at the center) cease, but inertia would keep you going.
Explanation:
your welcome
 
        
             
        
        
        
Hooke's Law says that F=-kx where k is the spring constant measured in N/m (newtons per meter)