At perihelion, a planet will have maximum energy of position and maximum energy of motion maximum energy of position and minimum energy of motion maximum energy of motion and minimum energy of position minimum energy of position and minimum energy of motion
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At perihelion, a planet will have
maximum energy of position and maximum energy of motion
maximum energy of position and minimum energy of motion
maximum energy of motion and minimum energy of position
minimum energy of position and minimum energy of motion
During most of Voyager 1's two-year journey to Jupiter, the spacecraft was
slowing down with respect to the Sun
moving with a constant speed with respect to the Sun
speeding up with respect to the Sun
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You are in an elliptical orbit about the Earth and at perigee you fire rocket engines to slow down. Then, as a result:
your apogee distance will increase and your perigee distance won't change
your apogee distance will decrease and your perigee distance won't change
your perigee distance will decrease and your apogee distance won't change
your perigee distance will increase and your apogee distance won't change
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During a launch, all of the energy stored in the fuel is converted into the vehicle's energy of motion.
True
False
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During a typical launch from Earth, the three main forces acting on a launch vehicle are
thrust, gravity, and lunar tides
thrust, gravity, and atmospheric drag
gravity, the contact force, and atmospheric drag
thrust, aerodynamic lift, and centrifugal force
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A satellite is orbiting the Earth every 100 minutes. It fires its engines and decreases its speed with respect to the center of the Earth. After the engines are shut off again, the satellite will continue orbiting, but now it might take
90 minutes to orbit the Earth
110 minutes to orbit the Earth
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