A girl runs around a circular track of radius R with a constant speed v. At the moment the girl has run half of the track, the magnitude of her average acceleration is A) v²/ $\pi$ R. B) $0$ C) 2v²/R. D) 2v²/ $\pi$ R. E) v²/R.

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The Answer of A girl runs around a circular track of radius R with a constant speed v. At the moment the girl has run half of the track, the magnitude of her average acceleration is A) v²/ $\pi$ R. B) $0$ C) 2v²/R. D) 2v²/ $\pi$ R. E) v²/R.

A Girl Runs Around a Circular Track of Radius R π\piπ

A Girl Runs Around a Circular Track of Radius R $\pi$