Redirection object after collision

let bubble;
let targets = [];

function setup() {
    createCanvas(500, 700);
    bubble = new Bubble();
        for (let i = 0; i < 10; i++) {
            targets[i] = new Target;
        }
}

function draw() {
    background(0);
    bubble.show();
    bubble.move();
    for (let i = 0; i < targets.length;  i++) {
        targets[i].show();
        if (targets[i].intersects(bubble) == true) {
            console.log('True!');
        }
    }
}

function Target() {
        this.x = random(50, 450);
        this.y = random(50, 650);
        this.r = 50;
        this.val = floor(random(1, 100));

    this.show = function() {
        fill(255);
        rectMode(CENTER);
        rect(this.x,this.y,this.r,this.r);
        fill(0);
        textSize(18);
        textAlign(CENTER, CENTER);
        text(this.val, this.x, this.y);
    }
    this.intersects = function(other) {
            dx = this.x - other.x;
            dy = this.y - other.y;
            d = sqrt(dx * dx + dy * dy);
            minDistance = this.r + other.r;
            if (d < minDistance) {
                return true;
            } else {
                return false;
            }
        }
}


function Bubble() {
            this.x = 50;
            this.y = 50;
            this.r = 10;
            this.xspeed = 10;
            this.yspeed = 7;

        this.move = function() {

            if (this.x > width || this.x < 0) {
                this.xspeed = this.xspeed * -1;
            }

            if (this.y > height || this.y < 0) {
                this.yspeed = this.yspeed * -1;
            }

             this.x = this.x + this.xspeed;
             this.y = this.y + this.yspeed;
            }
        this.show = function() {
            noStroke();
            fill(255);
            ellipse(this.x,this.y,this.r*2,this.r*2);
        }
    }

So, basically i found a way to calculate whether or not a collision occurred with the bubble and the targets. Using the Pythagorean theorem to calculate d (the distance) and comparing it to the minDistance, which i've said is whether or not the radii have crossed. I've confirmed this is working by console.logging 'True!' if that occurs and it works. Where I'm stumped is getting the ball to bounce correctly. I'm assuming that i need to calculate the angle of incidence and use that to generate a new angle off of the target. Foolishly i was using xspeed = xspeed * - 1 and yspeed = yspeed * -1. That changes the direction completely and isn't a "bounce" it's simply a reversal of the direction.