# Circular Motion

1. Nov 26, 2007

### temaire

1. The problem statement, all variables and given/known data
http://img98.imageshack.us/img98/7256/circularhn0.png [Broken]​
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2. Relevant equations
None.

3. The attempt at a solution
The answer key says that the answer is the bus coming to a stop. I think this is the answer because the wheels of the bus are slowing down. Is this the right answer, because a lot of people in my class thought that the answer was the earth revolving the sun, even though the earth revolves around the sun in an elliptical orbit and not a circular one.

Last edited by a moderator: May 3, 2017
2. Nov 26, 2007

### Kurdt

Staff Emeritus
The bus option is not clear as it should have probably stated the bus' wheels while coming to a stop. From the question however you should have been able to guess from the term non-circular motion. Of course, the Earth being in an elliptic orbit means its not in uniform or non-uniform circular motion since the common condition for both is that there must be circular motion.

3. Nov 26, 2007

### temaire

So you're saying that the answer is B? Or is it just a bad question?

4. Nov 26, 2007

### Kurdt

Staff Emeritus
The answer is A and the question could have been clearer.