Suppose We Have a Rocket in Outer Space

question 15

Multiple Choice

Suppose we have a rocket in outer space.The rocket consists of a payload of 5280.0 kg.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.The speed at which the rocket expels propellant is 5.11 km/s.If the rocket is to make the trip from the Earth to the Moon,a distance of 3.82 * 10⁵ km,in 7.5 hours,what mass of fuel is required? (in kg)

• A)121000 kg
• B)130300 kg
• C)84200 kg
• D)74700 kg
• E)200000 kg

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