Question

A long-distance runner is running at a constant speed of 5 m/s.

How long does it take the runner to travel 1 km?


ASAP

Answer 1

3.33 minutes (3 minutes and 20 seconds)

Step-by-step explanation:

Speed of the runner = s = 5 m/s

We need to calculate how will it take for runner to complete 1 km. We have the speed, the distance and we need to find the time. Before performing any calculations, we must convert the values to same units.

Speed is in m/s and distance is in kilometers. So we have to either convert speed to km/s or distance into meters. In this case, converting distance into meters would be a convenient option.

1 kilo meters = 1000 meters

The distance, speed and time are related by the equation:

Distance = Speed x Time

So,

Time = Distance/Speed

Using the values, we get:

t = 1000/5

t = 200 seconds

This means, the runner can complete 1 kilometers in 200 seconds. Since, there are 60 seconds in a minute, we can convert this time to minutes, by dividing it by 60. i.e.

`200 \text{ sec} = (200)/(60) \text{ min} = 3.33 \text{ min}`

Thus, it will take the runner 3.33 minutes (3 minutes and 20 seconds) to travel 1 km.