Question

An airplane is traveling at a constant speed of 600miles per hour. How many feet does it travel in 9seconds? Remember that 1 mile is 5280 feet.

Answer 1

The airplane will travel 7,920 feet in 9 seconds.

Explanation:

Givens

• The speed of the airplane is 600 mph.
• The time is 9 seconds.

To find the distance in feet, we need to transform, because, we have the speed in miles per hour, and we need to work with feet and seconds.

We know that 1 mile is 5280 feet, and 1 hour is 3600 seconds. We use this to transform the speed

`600(mi)/(hr)(1hr)/(3600sec)(5280ft)/(1mi)= 880 ft/sec`

Now, the airplane is traveling at a constant speed. So, the movement can be described as

`d=st`, where
`d` is distance,
`s` is speed and
`t` is time.

Replacing all values, we have

`d=880ft/sec(9sec)=7,920ft`

Therefore, the airplane will travel 7,920 feet in 9 seconds.