Kickball Question

A1 is attempting a bounce pass to A2, but the ball hits B1 in the foot and bounces directly back to A1. The kick was NOT intentional as B1 was just shuffling his feet to get into position, but the ball hit his foot. Is this a kickball, or can play resume? Also, if it isn't a kickball, can A1 start a new dribble? Thanks for any help; trying to settle a dispute between my brother and I.