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Answer
When a ball on the end of a string is swung in a vertical circle,
the ball is accelerating because
A.
B.
C.
D.
the speed is changing.
the direction is changing.
the speed and the direction are changing.
the ball is not accelerating.
Copyright Â© 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley.
Slide 6-14

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