Orbital Motion Answers
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Hannah has information about an object in circular orbit around Earth. mEarth = 6.0 × 1024 kgG = 6.67 × 10–11 rearth=6.0 x 106 m
A
the mass of the orbiting objectB
the distance of the orbiting object to EarthC
the orbital period of EarthD
the radius of Earth2
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How high above Earth is a satellite orbiting if its tangential velocity is 5000 m/s? Earth’s mass is kg and its radius is m.
A
1,500,000 mB
2,240,000 mC
9,608,000 mD
16,008,000 m3
Sid created a chart to summarize characteristics of satellite motion. Which best describes Sid’s error?
A
Tangential speed changes throughout a satellite’s orbit.B
Centripetal force is perpendicular to the velocity of the satellite.C
Tangential speed increases with a satellite’s increasing distance from Earth.D
Centripetal force can sometimes slow down a satellite in orbit.4
Enrique is given information about a satellite orbiting Earth.r = 3.8 × 108 mT = 18 days
A
convert the radius to kilometersB
convert the orbital period to secondsC
find the square root of the radiusD
find the square root of the orbital period5
Which best explains why a satellite accelerates?
A
It is always changing direction.B
It is constantly slowed by gravity.C
It does not have forces acting on it.D
It is weightless when it is in orbit.6
Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth?
A
They are falling toward Earth at the same rate as the space shuttle.B
They are falling toward Earth at a faster rate than the space shuttle.C
They are too far from Earth to experience gravity.D
They are too far from Earth to experience air resistance.Did you find these answers helpful?
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