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Our galaxy, the Milky Way, has a diameter of about 100,000 light years. How many years would it take a spacecraft to cross the galaxy if it could travel at 99% the speed of light? A. 1.4 × 103 yrs B. 1.0 × 105 yrs C. 1.4 × 104 yrs D. 7.2 × 103 yrs E. None of these is correct.

Respuesta :

Answer :

The time is [tex]1\times10^{5}\ yrs[/tex]

(B) is correct option.

Explanation :

Given that,

Diameter = 100000 light year

Velocity = 0.99 c

We need to calculate the time

Using formula of time

[tex]t = \dfrac{d}{v}[/tex]

Put the value into the formula

[tex]t =\dfrac{100000 c}{0.99c}[/tex]

[tex]t =1\times10^{5}\ yrs[/tex]

Hence, The time is [tex]1\times10^{5}\ yrs[/tex]

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