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

Question

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

Quizplus · Accepted Answer

The Answer of 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

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