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James Is Twirling a Rock Around a Horizontal Circle on the End

Question 22

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James is twirling a rock around a horizontal circle on the end of a string. Figure 7-2 is a top view (motion is counterclockwise) Figure 7-2
James is twirling a rock around a horizontal circle on the end of a string. Figure 7-2 is a top view (motion is counterclockwise) Figure 7-2 If the speed is constant what is the acceleration at point A? A) zero B) centrifugal C) r D) v / r E) centripetal
If the speed is constant what is the acceleration at point A?


A) zero
B) centrifugal
C) r
James is twirling a rock around a horizontal circle on the end of a string. Figure 7-2 is a top view (motion is counterclockwise) Figure 7-2 If the speed is constant what is the acceleration at point A? A) zero B) centrifugal C) r D) v / r E) centripetal
D) v / r
E) centripetal

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