Answer:
a) d = 9,454 10¹⁵ m, b) 18.9 10²¹ m c) 113 10²⁴ m
Explanation:
The light years unit is used because the distances are so large that it is not very manageable.
The speed the light is the space is
c = 2,998 10⁸ m /s
a) As the speed is constant we can use the equations of uniform motion
t = 1 year (365 days / 1 year) (24 h / 1 day) (3600 s / 1h) = 3.1536 10⁷ s
c = d / t
d = c / t
d = 2,998 10⁸ 3,136 10⁷
d = 9,454 10¹⁵ m
b) let's transform is distance to meters
d = 2.00 10⁶ light year (9,454 10¹⁵ m / 1 ly)
d = 18.9 10²¹ m
c)
d2 = 12.0 10⁹ ly (9,454 10¹⁵ /1 ly)
d2 = 113 10²⁴ m
