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A space ship moves from earth to moon and back. The greatest energy required for the space ship is to overcome the difficulty in |
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a) |
Entering the earth’s gravitational field |
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b) |
Take off from earths field |
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c) |
Take off from lunar surface |
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d) |
Entering the moon’s lunar surface |
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A space ship moves from earth to moon and back. The greatest energy required for the space ship is to overcome the difficulty in |
|
|
a) |
Entering the earth’s gravitational field |
|
b) |
Take off from earths field |
|
c) |
Take off from lunar surface |
|
d) |
Entering the moon’s lunar surface |
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(b) When the spaceship is to take off, gravitational pull of earth requires more energy to be spent to overcome it |