Before Taking off, a plane travels at a speed of 1/4 miles per second, The runway is 5 miles long, How many seconds, does it take for the plane to get to the end of the runway?
1/4 mi per second is 4 seconds per mile
So, that would make 20 seconds to go 5 miles
But of course, the plane does not go at take-off speed the whole way down the runway, right?
To find out how many seconds it takes for the plane to get to the end of the runway, we can divide the length of the runway by the speed of the plane.
Length of the runway: 5 miles
Speed of the plane: 1/4 mile per second
So, the time it takes for the plane to get to the end of the runway can be calculated as:
Time = Length / Speed
Plugging in the values:
Time = 5 miles / (1/4 miles per second)
To divide a fraction by a fraction, we multiply the first fraction by the reciprocal of the second fraction:
Time = 5 miles * (4/1 miles per second)
Now, we can cancel out the units of miles:
Time = 5 * 4 seconds
Time = 20 seconds
Therefore, it takes 20 seconds for the plane to get to the end of the runway.