Shouldn't there be a question mark after the word "this"?
<<The star nearest to our solar system is said to be 3.8 ly away. How many km away is this? >>
Multiply ten years (converted to seconds) by the speed of light, 3.00*10^5 km/s. That will be the distance in km
For the time required, divide the distance by 100*0.340 km/s = 34 km/s
Actually, spacecraft can go faster than than mach 100. It doesn't make sense to refer to the speed of sound in space
The star nearest to our solar system is said to be 3.8 ly away. How many km. away is this if a spaceship can travel at the speed 100 times that sound , how long armed it take that spaceship to travel from the earth to the nearest star. Express your answer in meaningful term.
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