Answer:
Explanation:
The center of mass lies on a line that joins position 4 of one start with position 4 of the other star.  The shortest distance between these two points will produce the largest velocity. You are using F = m v^2/R
Small R = large force. 
Large Force = increased speed.
The masses don't have any effect on the outcome: they remain constant.
 
        
             
        
        
        
Answer:
Subtract the kinetic energy at the bottom from the potential energy loss. The remainder becomes frictional heat.
Potential energy loss: 
M g H = 21.7*9.81*3.5 = 745.1 J
Kinetic energy at bottom of slide: 
= (1/2) M v^2 = 52.5 J
 
        
             
        
        
        
Answer:
c
Explanation:
its about how the brain reacts
 
        
                    
             
        
        
        
Just show a picture so I can help ur information is misleading...