Free Autumn Question

Question

Well, I will try my best to explain my problem. I have this program where you can choose 5 goals. When you select it, you can drag it while you click the mouse button, and the cursor is within the radius of the ball.

The problem is that I need a way to make the ball rise when the user stops pressing the mouse button, as if he sent it to the float in the air, and then fell again. I have one way to find out time, speed, and therefore acceleration, but I don’t know how to implement it.

Now I have this:

void Circle::Fall(float velocity,float time)
{    
    if(this->posY >= 580)
    {
        this->posY = 580;
        this->vfall= 0.0f;
    }
    else if(this->posY < 580)
    {
        //this->distance=9.81f * 0.5f*time*time;
        this->vfall+= velocity;
        this->posY += this->vfall;
    } 
}

With this, he simply falls, and I cannot make the effect that I was trying to explain.

In addition, I am calculating a time like this (just in case, it helps):

difX=(x> event.motion.xrel)? x-event.motion.xrel : event.motion.xrel-x;
difY=(y> event.motion.yrel)? y-event.motion.yrel : event.motion.yrel-y;

And I use difYas a time variable

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