A Ball Attached to a String Starts at Rest and Undergoes

question 13

Multiple Choice

A ball attached to a string starts at rest and undergoes a constant angular acceleration as it travels in a horizontal circle of radius 0.30 m. After 0.65 sec, the angular speed of the ball is 9.7 rad/s. What is the tangential acceleration of the ball?

• A)4.5 m/s²
• B)0.32 m/s²
• C)15 m/s²
• D)7.6 m/s²
• E)28 m/s²

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