How far does a roller coaster travel if it accelerates at 2.83 m/s from an initial velocity of 3.19 m/s for 12.0 s? 55.3 m
72.2 m
446 m
242 m

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.