A baseball pitcher,loosening up his arm before a game,tosses a 0.15-kg ball using only the rotation of his forearm,0.32 m in length,to accelerate the ball.If the ball starts at rest and is released with a speed of 23 m/s in a time of 0.4 s,what is the average angular acceleration of the arm and ball? A) 2.9 rad/s² B) 28.8 rad/s² C) 18.4 rad/s² D) 179.7 rad/s² E) 27.0 rad/s²

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The Answer of A baseball pitcher,loosening up his arm before a game,tosses a 0.15-kg ball using only the rotation of his forearm,0.32 m in length,to accelerate the ball.If the ball starts at rest and is released with a speed of 23 m/s in a time of 0.4 s,what is the average angular acceleration of the arm and ball? A) 2.9 rad/s² B) 28.8 rad/s² C) 18.4 rad/s² D) 179.7 rad/s² E) 27.0 rad/s²

A Baseball Pitcher,loosening Up His Arm Before a Game,tosses a 0.15-Kg