How long does it take to walk 3.1 km at a speed of 4 km an hour?

Answer 1

we know ,that

speed =distance /time .

distance =3.1 km

speed =km /h.

time =3.1 /4 =0.775 hr

Answer 2

There is a simple solution to any problem that deals with speed, distance, and time. Physics typically dives right into this straight off! All we need to remember is that:

• Distance = Time x Speed
• Time = Distance ÷ Speed
• Speed = Distance ÷ Time

In our case, we're being asked "How long". How long indicates that we're trying to figure out the time it will take to travel a certain distance. As long as we're given the speed in our problem all will be well.

So Busybody Jane is walking down a 1 kilometer long road. She's strolling along a cruising speed of 4.5 kilometers per hour. Since we know that the road is 1 Km long and she's moving at 4.5 kph, we simply plug in our formula.

• Time = 1 Km ÷ 4.5 Kph
• = 0.222 hour(s)

We know that there are 60 minutes in an hour. So we have another small division problem.

• 60 minutes/hour ÷ 0.222 hours = 13.333 minutes.

So therefore if Busybody Jane keeps up the same speed with no slowdowns she will complete the 1Km road in about 13 minutes and 20 seconds.

Answer 3

13 minutes 20 seconds

60/4.5 = 13.3333333