Answer:
The student took 400 seconds to run for 2 km
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 total distance traveled by the total time taken:
[tex]\displaystyle \bar v=\frac{d}{t}[/tex]
The student ran at an average speed of v=5 m/s and covered a distance of 2 km. Converting km to meters: d=2 km *1000= 2000 m. We must find the time the student needed run that distance, so we solve for t:
[tex]\displaystyle t=\frac{d}{\bar v}[/tex]
[tex]\displaystyle t=\frac{2000}{5}=400\ s[/tex]
The student took 400 seconds to run for 2 km
