As the Earth moves around the Sun, its acceleration vector points

(A) in its direction of motion.
(B) towards the Sun.
(C) away from the Sun.
(D) nowhere because it's zero.

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As the Earth moves around the Sun, its acceleration vector points

(A) in its direction of motion.

No.
It is not speeding up.
Try again.

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As the Earth moves around the Sun, its acceleration vector points

(B) towards the Sun.

Yes.
Circular motion at constant speed.
Check the other answers.

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As the Earth moves around the Sun, its acceleration vector points

(C) away from the Sun.

No. We would have to clear that with
interstellar traffic control.
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As the Earth moves around the Sun, its acceleration vector points

(D) nowhere because it's zero.

No. Our velocity vector is turning
and thus changing.
Try again.

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