That information describes the plane's speed.  
If he had also told them what direction they were flying, then 
they would have been able to put the two pieces of information 
together, and they would know the plane's velocity.
        
                    
             
        
        
        
Answer:
The circumference of the Earth is 24818.58 miles
Explanation:
Analysis conceptual : The formula of the circumference is the following:
L= π*D Formula (1)
Where:
L : is the length of the circumference in miles (mi)
π : is the constant 
D : is the diameter of the circumference in miles (mi)
Known data
π = 3.1416
D= 7900 miles:  Diameter of the Earth
Problem development
We apply the formula 1 to calculate the circumference of the Earth  (L):
L= π*7900 miles
L= 24818.58 miles
 
        
             
        
        
        
Answer:
6360 km
Explanation:
Use the kinematics equation  .  We are given t = 7.95 hours and a = 0 m/s^2 (constant speed means there is no acceleration).  Solve for x.
.  We are given t = 7.95 hours and a = 0 m/s^2 (constant speed means there is no acceleration).  Solve for x.
