Alex kicks a soccer ball straight up with an initial velocity of 15.5 m/s. a) what is the maximum the ball goes above the ground? b) How long does it take to return to the ground? (40 pts)​

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative