A particle moves in a circle of radius $R$, with a constant speed $v$. Then, during a time interval $[\pi R/3v]$, which of the following is true?
A particle moves in a circle of radius $R$, with a constant speed $v$. Then, during a time interval $[\pi R/3v]$, which of the following is true?
- A
| average acceleration | = $3v^2/\pi R$
- B
| average velocity | = $3v/\pi$
- C
| average acceleration | = $2v^2/\pi R$
- D
Both $(A)$ and $(B)$
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