Answer:
4.83 hours
Step-by-step explanation:
We can solve the problem by using the definition of average speed for a uniform motion:
![v=(d)/(t)](https://img.qammunity.org/2020/formulas/physics/high-school/jidcwnxn1c0zdocnxtzp97sqgn187ivyra.png)
where
d is the distance covered
t is the time taken
v is the average speed
For the plane in this problem, we know:
d = 2780 mi is the distance
v = 575 mph is the speed
Solving for t, we find how much time the flight takes:
![t=(d)/(v)=(2780)/(575)=4.83 h](https://img.qammunity.org/2020/formulas/physics/middle-school/e05sqiik8ndgfwcue1pkn4d39zupa1n6rv.png)