How to increas the velocity of an object OnCollisioEnter2D

Questions & Answers
1

I´m trying to made my 2Dball to increas the velocity on the collision.

2

public float vplusX; //Set these in inspector
public float vplusY;

    void OnCollisionEnter2D(Collision col)
    {
        gameObject.GetComponent<Rigidbody2D>().velocity += new Vector2(vplusX, vplusY);
    }

Alternatively, you can set the velocity increase to be a percentage of current velocity with

public float vpercentage;    //1f = 100%

void OnCollisionEnter2D(Collision col)
        {
            gameObject.GetComponent<Rigidbody2D>().velocity *= (1f + vpercentage)
        }