I need some help to this problem because its only rated as a3. A pitcher throws

Question

I need some help to this problem because its only rated as a3. A pitcher throws a curveball that reaches the catcher in0.53 s. The ball curves because it isspinning at an average angular velocity of 315 rev/min (assumed constant) on its way to thecatcher's mitt. What is the angular displacement of the baseball(in radians) as it travels from the pitcher to thecatcher?
The answer I got was 17.49rad I need some help to this problem because its only rated as a3. A pitcher throws a curveball that reaches the catcher in0.53 s. The ball curves because it isspinning at an average angular velocity of 315 rev/min (assumed constant) on its way to thecatcher's mitt. What is the angular displacement of the baseball(in radians) as it travels from the pitcher to thecatcher?
The answer I got was 17.49rad

Explanation / Answer

Time t= 0.53 s

Angular speed w= 315 rev / min

                           = 315 * 2(pi) rad / 60 s

                            = 32.98 rad / s

the angular displacement of the baseball (in radians) asit travels from the pitcher to the catcher is

    = wt

    = 17.48 rad

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