Answer:
<u>Searching in google I found the total mass and the radius of the ball (m = 1.5 kg and r = 10 cm) which are needed to solve the problem!</u>   
The ball rotates 6.78 revolutions.  
       
Explanation:
<u>Searching in google I found the total mass and the radius of the ball (m = 1.5 kg and r = 10 cm) which are needed to solve the problem!</u>        
At the bottom the ball has the following angular speed:

Now, we need to find the distance traveled by the ball (L) by using θ=28° and h(height) = 2 m:
 
 
To find the revolutions we need the time, which can be found using the following equation:                 
 
  
 (1)
 (1)
So first, we need to find the acceleration:
 (2)
    (2)   
By entering equation (2) into (1) we have:

Since it starts from rest (v₀ = 0):   

Finally, we can find the revolutions:  

Therefore, the ball rotates 6.78 revolutions. 
I hope it helps you!                                                                                                                                                                                           
 
        
             
        
        
        
Answer:
it started to move a 1 second 
 
        
                    
             
        
        
        
21.75 Miles Per Hour
I got this by multiplying 7.25(3) because I know 20 minutes is 1/3 of 1 he
        
             
        
        
        
Answer:Gibb's free energy
Explanation: 
The Free energy change describes the amount of energy that is available in any system to do work. It is often designated with the symbol G
 
        
             
        
        
        
I’m pretty sure it’s circuit three.