If a spacecraft travels 3.6 au per year, in how many years would it travel from earth to mars? a. 0.15 years b. 1.83 years c. 2.54 years d. 3.72 years

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9 July, 18:04

If a spacecraft travels 3.6 au per year, in how many years would it travel from earth to mars? a. 0.15 years b. 1.83 years c. 2.54 years d. 3.72 years

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Fly · Answer 1

Astronomical unit is roughly the distance from Earth to the Sun (or 149,597,870,700 m).

Mars can be between 0.53 au and 2.52 au from Earth, depending on their relative positions. In both cases we will not accept answers B), C) and D).

If we use the closest range:

0.53 au : 3.6 au/year = 0.1472 ≈ 0.15 years

Answer: A)