To solve this task we have to make a proportion, but firstly we have to set up all the main points : so, the distance is  s=r(B), that has its <span>r=radius,B=angle in rad
velocity v=ds/dt= w(r)
Do not forget about </span> w = angular speed in rad/s and 

Now we can go to proportion




SOLVING FOR A : 



 or something about <span>10 mph --- SOLVING FOR B.
</span>I'm sure it helps!
 
        
        
        
Answer:
D. from a separate pool than is the control group.
Explanation:
in the picture the person answers is backwards but...
hope this helps have a nice day 
 
        
             
        
        
        
Answer:
Explanation:
Kinetic Energy formula:
KE =  mv²
mv²
m=mass
v=speed
Given:
m=0.25kg
v=2.5m/s
Plug the values in:
KE = 1/2(0.25kg)(2.5m/s)²
KE = 0.78125 J (Joules)
 
        
             
        
        
        
The y-component of the acceleration is 
Explanation:
The y-component of the ice skater acceleration can be calculated with the equation

where
 is the y-component of the final velocity
 is the y-component of the final velocity
 is the y-component of the initial velocity
 is the y-component of the initial velocity
t is the time elapsed
Here we have:
- Initial velocity is  at at , so its y-component is , so its y-component is 
- Final velocity is  at at , so its y-component is , so its y-component is 
The time elapsed is
t = 8.33 s
Therefore, the y-component of the acceleration is

Learn more about acceleration:
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