Question

A plane flies 2,700 miles in 5 hours.What is its average speed in feet per second?

Answer 1

Step-by-step explanation:

v=s/t=2700/(5×3600)=0.15milles/second

Answer 2

The average speed is 792 feet/sec.

Step-by-step explanation:

Distance covered by plane $=2700 \ miles$

Number of hours taken to cover that distance $= 5 \ hours$

As we know,

Average speed= $\frac{Total\ distance \ covered}{Total \ time\ taken}$

1 mile = $5280 \ feet$

1 hour $= 60\ minutes= 60\times 60 \ seconds=3600\ seconds$

So, the total distance covered in feet $=2700\times 5280=14256000\ feet$

Total time taken in seconds$= 5\times 3600=18000\ sec.$

Hence, the average speed in feet per second $=\frac{14256000}{18000}=792$

Therefore the average speed of the plane is 792 feet/sec.

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