A point charge q = 15.00 C is held fixed in space. From a horizontal distance of 3.00 cm, a small sphere with mass 4.00 103 kg and charge q2 = +2.00 C is fired toward the fixed charge with an initial speed of 45.0 m/s. Gravity can be neglected. Part A What is the acceleration of the sphere at the instant when its speed is 23.0 m/s ? Express your answer with the appropriate units. xXb X.10n a= Value S Submit Request Answer ?