Heather and Matthew walk eastward with a speed of .85 m/s east. If it takes them 50 min to walk to the store, how far have they walked? Answer in units of km

To find the distance Heather and Matthew have walked, we can use the formula:

Distance = Speed * Time

First, let's convert the time from minutes to hours since the speed is given in meters per second. There are 60 minutes in an hour, so 50 minutes is equal to 50/60 = 5/6 hours.

Now we can substitute the values into the formula:

Distance = 0.85 m/s * (5/6) hours

To simplify the calculation, let's convert meters to kilometers by dividing by 1000:

Distance = (0.85 m/s * (5/6) hours) / 1000 km/m

Multiplying the values together:

Distance = (0.85 * 5/6) * (m/s * hours) / km

Distance = (4.25/6) * km

Simplifying further:

Distance = 0.71 km

Therefore, Heather and Matthew have walked approximately 0.71 kilometers.