Question

According to Nasa, when the International Space Station (ISS) is at an altitude of 385 kilometers, it travels at about 27,707 kilometers per hour. After how many hours of travel will the ISS reach a star that is 4.8 lightyears away? Recall that 1 light year = 9.5 · 1012 kilometers and 1 kilometer = 0.62 miles. In your final answer, include all of your calculations.

Answer 1

Supposing the ISS travels at a constant speed, then use the relation,


`t=space/velocity`

Then you will obtain,


`t=1.65\cdot 10^9\ hours`

Answer 2

`1.6457934818* 10^9` hours

Explanation:

ISS is at a distance = 385 km

We are supposed to find how many hours of travel will the ISS reach a star that is 4.8 light years away?

1 light year =
`9.5 * 10^(12)`

So, 4.8 light years =
`4.8 * 9.5 * 10^(12)`

=
`4.56*10^(13)km`

So , we are supposed to find after how many hours ISS will be at an altitude
`4.56* 10^(13)km`

We are also given that it travels at about 27,707 kilometers per hour

Since it travels 27707 km in hours = 1

So, it travels 1 km in hours =
`(1)/(27707)`

It travels
`4.56*10^(13)km` in hours =
`(4.56*10^(13))/(27707)`

=
`1.6457934818* 10^9`

Hence ISS will travel
`1.6457934818* 10^9` hours reach a star that is 4.8 light years away .