A basketball player is spinning a basketball, of radius 23 cm and mass 0.625 kg, on the tip of his finger. If he accelerates the ball at 0.3 m/s2, what torque

A basketball player is spinning a basketball, of radius 23 cm and mass 0.625 kg, on the tip of his finger. If he accelerates the ball at 0.3 m/s2, what torque is he applying on the ball? Assume his finger is frictionless. \(I=2/3mr^2\) How do you do this? I keep getting the wrong answer of .007