If the spaceship takes 3 days to reach the moon, which is approximately 386,400 km away, then its average speed is about 128,800 km per day (386,400 km / 3 days = 128,800 km/day).
Mars is about 140 times farther away from Earth than the moon (386,400 km * 140 = 54,096,000 km).
Using the spaceship's average speed of 128,800 km/day, it would take approximately 420 days to reach Mars (54,096,000 km / 128,800 km/day = 420 days).
Therefore, it would take about 1 year for the spaceship to reach Mars.
A human-operated spaceship reaches the moon in 3 days. The moon is about 386, 400 km from Earth? Mars, our closest planetary neighbor, is, at its closest, about 140 times farther away from us than the moon if Mars stays in place. Assuming a very simple model of the solar system, about how long would it take that same spaceship to reach Mars? (1 point)
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• about 7.5 years
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• about 1 year
• about 22.5 years
• about 2.5 years
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