What is (Fnet3)x, the x-component of the net force exerted by these two charges on a third charge q3

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation