A Ball Attached to a String Moves in a Horizontal

question 8

Multiple Choice

A ball attached to a string moves in a horizontal circle of radius 1 m.It makes one revolution in 4 seconds.The magnitude of its acceleration is

• A)2.5 m/s².
• B)3.9 m/s².
• C)6.4 m/s².
• D)9.8 m/s².
• E)12.4 m/s².

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