Explanation:
It is given that, 
      = -40 mi/h,
 = -40 mi/h,      = -40 mi/h
 = -40 mi/h
The negative sign indicates that x and y are decreasing.
We have to find  . Equation for the given variables according to the Pythagoras theorem is as follows.
. Equation for the given variables according to the Pythagoras theorem is as follows.
               
Now, we will differentiate each side w.r.t 't' as follows.
         
or,          
So, when x = 4 mi, and y = 3 mi then z = 5 mi.
As,       
                        = 
                        = 
                        = 52
Thus, we can conclude that the cars are approaching at a rate of 52 mi/h.
 
        
             
        
        
        
Answer: a. ) What is the magnitude of their average acceleration (in m/s2)
 
        
                    
             
        
        
        
Because of the greenhouse gases inside the greenhouse, and the gases trap the heat from the sun so the plant don't freeze, hope this helps
        
             
        
        
        
Answer:
How fast is it going? 29.4 Meters per second 
How far has it fallen? 44.1 meters
Explanation: Gravitional Acceleration: 9.8 meters per secnd squared!
 
        
             
        
        
        
Answer: 
Explanation:
This problem can be solved by the following equation:

Where:
 is the change in kinetic energy
 is the change in kinetic energy
 is the electric potential difference
 is the electric potential difference
 is the electric charge
 is the electric charge
Finding  :
:


Finally:
