Apoint charge q1=15.00μc is held fixed in space. from a horizontal distance of 6.00 cm , a small sphere with mass 4.00×10−3kg and charge q2=+2.00μc is fired toward the fixed charge with an initial speed of 41.0 m/s . gravity can be neglected.
what is the acceleration of the sphere at the instant when its speed is 26.0 m/s ?

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.