At Age 21,you Set Out for a Star That Is

question 48

Multiple Choice

At age 21,you set out for a star that is 50 light-years from Earth.How fast would your spaceship have to travel in order to reach that star when you are 61 years old? One light-year is the distance light travels in one year.

• A)0.58c
• B)0.68c
• C)0.78c
• D)0.88c
• E)0.96c