college physics
posted by Lanise .
Sirius is about 9.0 lightyears from Earth.
To reach the star by spaceship in 10 years (ship time), how fast must you travel?
How long would the trip take according to an Earthbased observer?
How far is the trip according to you?

Your question spurred me to look up the topic, being totally unfamiliar with it at this point.
I found it stated that Einstein’s special theory of relativity states that the time scale of an object moving at high speed is shortened in accordance with
……………t/t(o) = 1/sqrt[1 – (v^2/c^2)] where
t = the travel time to Sirius in seconds as observed by a person on Earth
t(o) = the travel time to Sirius as observed on a clock on the spaceship (10 years)
c = the speed of light = 186,300 m/s
v = the velocity of the spaceship as viewed by an observer on Earth
v(o) = the velocity of the spaceship as viewed by an observer on the spaceship
Let d = the distance from Earth to Sirius in miles = 9 light years
Given the information you offered, you should be able to derive the answers you seek.
Note that many scientists regard the contraction of time as a real phenomenon while others maintain that it is merely apparent.
A google search will undoubtedly provide you with much more information.
Respond to this Question
Similar Questions

physics
The distance from earth to the center of the galaxy is about 22500 ly (1 ly = 1 lightyear = 9.47 1015 m), as measured by an earthbased observer. A spaceship is to make this journey at a speed of 0.9995c. According to a clock on board … 
Earth science
How long an exposure would a photographer need to photograph star trails that are complete circles? 
Physics
Your dog has been diagnosed with a terminal illness for which there is no cure. The Veterinarian expects that it will live for 1 year before it succumbs to the condition. You have the idea that if you could keep the dog alive a little … 
College Physics
Sirius is about 9.0 lightyears from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel? 
colleg physics
Sirius is about 9.0 lightyears from Earth. To reach the star by spaceship in 10 years (ship time), how fast must you travel? 
physics
A certain star is 10.9 lightyears away. How long would it take a spacecraft traveling 0.960c to reach that star from Earth, as measured by observers in the following locations? 
Physics
Suppose you wish to visit a star which is 450 light years away, and that you want your 21000 kg rocket to move so fast that you only age 20 years during the round trip. a. How fast must the rocket travel relative to the Earth? 
Physics
In an attempt to reduce the extraordinarily long travel times for voyaging to distant stars, some people have suggested traveling at close to the speed of light. Suppose you wish to visit a star which is 410 ly away, and that you want … 
earth
How long would it take a brown dwarf star, five times the size of the Earth, to travel 450 light years, at 3500 mph? 
physics
Goku wants to visit Andromaeda galaxy which is 2 million light years away from earth. If it takes 30 years in the frame of the spaceship to travel to Andromeda from earth, what should be the speed of the spaceship?