Question

How much time does it take for a student running at an average speed of 5.00 m/s to cover a distance of 2.00 km?

Answer 1

The student took 400 seconds to run for 2 km

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 total distance traveled by the total time taken:

`\displaystyle \bar v=(d)/(t)`

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:

`\displaystyle t=(d)/(\bar v)`

`\displaystyle t=(2000)/(5)=400\ s`

The student took 400 seconds to run for 2 km