Lesson 6: Orbital Motion

Question 1

Which statements accurately describe satellite motion? Check all that apply.Gravity is the only force acting on a satellite.Inertia is the only cause of a satellite’s circular motion.Air resistance prevents satellites from staying in orbit for very long.Circular orbits result from the interaction between gravity and inertia.Gravity provides the centripetal force for satellites.Satellites are in free fall around Earth or other central objects.

Revolt · Accepted Answer

Gravity is the only force acting on a satellite.; Circular orbits result from the interaction between gravity and inertia.; Gravity provides the centripetal force for satellites.; Satellites are in free fall around Earth or other central objects.

Question 2

✔ increasesdecreasesstays the same

Revolt · Accepted Answer

✔ increases

Question 3

⇒ 7,570

Revolt · Accepted Answer

101742

Question 4

⇒ 5,630

Revolt · Accepted Answer

101743

Question 5

A 1,160 kg satellite orbits Earth with a tangential speed of 7,446 m/s. If the satellite experiences a centripetal force of 8,955 N, what is the height of the satellite above the surface of Earth? Recall that Earth’s radius is 6.38 × 106 m and Earth’s mass is 5.97 × 1024 kg.

Revolt · Accepted Answer

8.02 × 105 m

Question 6

⇒ revolution

Revolt · Accepted Answer

101746

Question 7

Which formulas have been correctly rearranged to solve for radius? Check all that apply.r = r = r = r = r =

Revolt · Accepted Answer

r =

Lesson 6: Orbital Motion Answers

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