Question

a plane took 3 hours and 33 minutes to finish a journey. if the distance of the journey was 2840 miles at what average speed did the plane travel

Answer 1

The average speed was 800 miles/hour

Step-by-step explanation:

Average Speed

If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the distance over the time:

`\displaystyle V=(d)/(t)`

A plane took 3 hours and 33 minutes to travel d=2840 miles to finish its journey. We will calculate the average speed in miles per hour, thus the time needs to be expressed in hours, and it's given in a mixed unit:

t=3 hours+33 minutes

Since there are 60 minutes in an hour:

t=3 hours+33 /60 hours = 3 hours + 0.55 hours = 3.55 hours

Now calculate the average speed:

`\displaystyle V=(2840)/(3.55)=800`

The average speed was 800 miles/hour