is 11 km/s, and the escape velocity for Moon is 2.4 km/s. We'd like to know how much more energy it takes to escape the gravitational pull of the Earth, than to escape the pull of the Moon. To answer this, use the kinetic energy formula K = m v2/2 with a mass of 1000kg, and compare the values you get for the two speeds quoted above
is 11 km/s, and the escape velocity for Moon is 2.4 km/s. We'd like to know how much more energy it takes to escape the gravitational pull of the Earth, than to escape the pull of the Moon. To answer this, use the kinetic energy formula K = m v2/2 with a mass of 1000kg, and compare the values you get for the two speeds quoted above
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter8: Conservation Of Energy
Section: Chapter Questions
Problem 12PQ
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The escape velocity for planet Earth is 11 km/s, and the escape velocity for Moon is 2.4 km/s. We'd like to know how much more energy it takes to escape the gravitational pull of the Earth, than to escape the pull of the Moon.
To answer this, use the kinetic energy formula K = m v2/2 with a mass of 1000kg, and compare the values you get for the two speeds quoted above. Then form the ratio of the Earth value to the Moon value.
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