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QuizMultiple Choice

Orbital Motion

Question 2 • 2003390-Physics 1 Honors Sem. 1 - Peters

A group of scientists is trying to launch an object into orbit, and the object is traveling at 6500 m/s. Which best explains why the object will not successfully orbit Earth?

Answer
A
There is not enough air resistance to keep the object moving.
B
There is not enough friction to keep the object moving.
C
The object is not traveling fast enough to match Earth’s curvature.
D
The object is traveling too fast to match Earth’s curvature.

Explanation

For an object to orbit Earth, it must travel sideways fast enough that as it falls, Earth’s surface curves away beneath it. A speed of 6,500 m/s is below the speed typically needed for a low Earth orbit, about 7,800 m/s, so the object would fall back toward Earth rather than keep orbiting. Therefore, choice C, “The object is not traveling fast enough to match Earth’s curvature,” is correct.

AI-written and checked against the verified answer.

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