# Interpolate object collision stuck in Unity

I am working on a very basic test in 2D. The problem I am having is that, when my sprite collides with the ground, it is checking the event too frequently. The sprite stays in limbo, as it doesn't have a chance to leave the ground. By the time it does, the check tells it to turn around, resulting it quickly going up and down. I uploaded an example clip to YouTube.

When contact is made, the sprite needs to change it's Y axis direction. How do I fix this? Please see my code, below:

void Update ()
{

if (hitWall)
{
moveUp = !moveUp;
}

if (moveUp)
{
transform.localScale = new Vector3(-1f, 1f, 1f);
GetComponent<Rigidbody2D>().velocity
= new Vector2(speed, GetComponent<Rigidbody2D>().velocity.x);
}
else
{
transform.localScale = new Vector3(1f, 1f, 1f);
GetComponent<Rigidbody2D>().velocity
= new Vector2(-speed, GetComponent<Rigidbody2D>().velocity.x);
}
}


Here is my object: