Which one of these motions is at constant acceleration?

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Homework Help Overview

The discussion revolves around identifying which of several motions exhibits constant acceleration, specifically comparing a car, a train, and a moon in orbit.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the definitions of constant acceleration and question the validity of the teacher's assertion regarding the moon's motion. There is a debate about whether the car's motion can be considered as having constant acceleration of zero.

Discussion Status

The conversation is active, with participants expressing skepticism about the teacher's perspective and discussing the implications of circular motion on acceleration. Multiple viewpoints are being considered without a clear consensus.

Contextual Notes

Participants are questioning the assumptions made about the nature of the moon's orbit and the definitions of constant speed versus constant acceleration. There is an indication of differing interpretations of the problem statement.

Lilygu3
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Homework Statement


Which one of these motions is at constant acceleration?
A) A car moving at a constant speed and constant direction.
B) A train making stops along its route.
C) A moon orbiting a planet.

Homework Equations

The Attempt at a Solution


I believe that A is an acceptable answer, since the car is at a constant acceleration of zero.
My teacher says C is the only correct answer.

Thank you for your input!
 
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Your teacher needs to go back to school.
 
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Likes   Reactions: azizlwl
I agree. The teacher seems to be entertaining the notion that the orbit of the moon is a perfect circle, which it ain't.
 
How the teacher can select C? Have you asked what is the reason?
 

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