Suppose We Have a Rocket in Outer Space

question 14

Multiple Choice

Suppose we have a rocket in outer space.The rocket consists of a payload of 5280.0 kg and 130300.0 kg of fuel.Assume that the rocket starts from rest,accelerates to its final velocity.After reaching this final velocity it begins its 3.82 * 10⁵ km trip to the moon.What is the speed at which we must expel the propellant to make the trip from the Earth to the Moon,a distance of 3.82 * 10⁵ km,in 7.5 hours? (in km/s)

• A)3.74
• B)4.37
• C)5.11
• D)5.98
• E)7.00

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