For a spacecraft to be in a hyperbolic orbit with respect to the Earth, it must have its engines on and a speed greater than 11.2 km/s have its engines on and a speed between 7.8 and 11.2 km/s have its engines off and a speed between 7.8 and 11.2 km/s have its engines off and a speed greater than 11.2 km/s
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
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For a spacecraft to be in a hyperbolic orbit with respect to the Earth, it must
have its engines on and a speed greater than 11.2 km/s
have its engines on and a speed between 7.8 and 11.2 km/s
have its engines off and a speed between 7.8 and 11.2 km/s
have its engines off and a speed greater than 11.2 km/s
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You can get from Earth to Mars by means of a Hohmann transfer orbit in 8 months. Based on what you know about Hohmann orbits, it should also be possible to make the same journey, also by Hohmann orbit, in
32 months
24 months
16 months
4 months
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You're on your way from Earth to Neptune, and you're 50 million kilometers from Earth. Then at the moment you are orbiting
the enter of the Earth
the center of the Sun
the center of Neptune
During most of a trip from Earth to Venus, we'll measure the velocity of a spacecraft with respect to
the center of the Milky Way galaxy
the center of the Sun
the center of the Earth
the center of Venus
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To conserve fuel during a launch from Earth, the best strategy is to launch
eastward from a high latitude
westward from a low latitude
westward from a high latitude
eastward from a low latitude
The launch window for a trip from Earth to Mars opens when Mars is
in exact alignment with the Earth and Sun in its orbit
behind the Earth in its orbit around the Sun
ahead of the Earth in its orbit around the Sun
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