00:01
Hi, today we are solving the question in which we are given that suppose you wanted to reach alpha century 4 .4 light years from the solar system in 80 years.
00:15
So we are given that 4 .4 light years from the solar system in 80 years.
00:27
So we need to find out how fast would you have to go in kilometer per art.
00:33
So here 4 .4 divided by 8 will give 11 by 200 that is equal to 0 .05 light year per year.
00:49
We know that speed of light is approximately equals to 3 into 10 raised to the power 8 meter per second.
01:08
Therefore we have to convert it into kilometer per second.
01:15
Second since we know that a kilometer is 10 raised to the part 3 meter so converting to kilometer per second speed of light in kilometer per second is equals to 3 into 10 raised to the part 5 kilometer per second so similarly we will now convert 0 .055 light year per year into kilometer per second.
01:52
So that will equal to 0 .055 into 3 into 10 raised to the power 5 kilometer per second.
02:03
That will be equal to 1650 kilometer per second.
02:10
Finally we need to convert kilometer per second into kilometer per hour as we have to give our final answer into kilometer per hour.
02:22
So here we know that there are 60 second in a minute and 60 minute in an hour.
02:28
So we multiply 16 ,500 into 60 and 60 meter per hour...