Question

Before taking off, a plane travels at a speed of 1/4 km per second. The runway is 5 km. How many seconds does it take the plane to get to the end of the runway? *

Answer 1

20 seconds

Explanation:

Given data

Speed= 1/4km/s

Distance= 5km

From the expression

Speed= distance/time

Time= distance/speed

Time= 5/ 1/4

Time= 5* 4/1

Time= 20 seconds

Hence the time is 20 seconds