Two alien spaceships start traveling toward each other from space stations that are 710,000 km apart. The first spaceship started an hour before the second spaceship and is traveling at 110,000 km/hr. In how many hours will the two spaceships meet if the second spaceship is traveling at 90,000 km/hr?

Respuesta :

To find out how many hours it will take for the two spaceships to meet, we can use the formula:

time = distance / (speed of first spaceship - speed of second spaceship)

In this case, the distance between the two space stations is 710,000 km, the speed of the first spaceship is 110,000 km/hr, and the speed of the second spaceship is 90,000 km/hr. So we have:

time = 710,000 / (110,000 - 90,000) = 710,000 / 20,000 = 35.5 hours

So the two spaceships will meet in 35.5 hours.

It's important to notice that the first spaceship started an hour before the second spaceship, so the time the two spaceships meet is 35.5 hours + 1 hour = 36.5 hours.

Answer:

  • They will meet after 3 hours

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The distance is 710000 km and the first spaceship has travelled 110000 km in the first hour.

The remainder of the distance is reducing by:

  • 110000 + 90000 = 200000 km an hour

Time to travel before they meet:

  • (710000 - 110000)/200000 =
  • 600000/200000 =
  • 3 hours