a ball is moving in a circle at fixed speed which of the following statement is true? choices in the picture
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a ball is moving in a circle at fixed speed which of the following statement is true? choices in the picture
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Answer:
Lets analyze *all* the options.
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A. No acceleration is present.
Incorrect!
Velocity prevails, so acceleration prevails.
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B. There must be one force acting on it.
Incorrect!
To keep the object in the circular motion, there will be numerous forces.
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C. Acceleration is present but has a constant magnitude.
NOT POSSIBLE.
The direction of the object constantly changes during circular motion. As accelerating is a vector quantity, acceleration also changes.
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So we are left with D. Acceleration is present and acts as a tangent to circle.
CORRECT!
Option D is correct.