| The instantaneous velocity and net acceleration for an object moving in a circular path are shown. At this moment in time, the object is : |
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A) Speeding up in a clockwise circle
B) Slowing down in a clockwise circle
C) Speeding up in a counterclockwise circle
D) Slowing down in a counterclockwise circle
Correct Answer: D
Solution :
| The instantaneous velocity of the object is tangent to its circular path, and we know that there?s a radial (centripetal) aspect of the net acceleration that points towards the center of the circular path. Thus, we can conclude that the object is traveling in a circular path that is located to its left, as shown here. |
| We can also see that the net acceleration must include a tangential component of acceleration that is in the opposite direction of the instantaneous velocity, implying that the object is slowing down as it travels along this circular path. |
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