Moving right and Left

[Persona]

Can anyone tell me how to get a character to move to the right and left suddenly?

I used this before, but it doesn't work on Character Colliders(Makes them pass through the floor). The same thing happens when I use translate to move them, it doesn't take into account the collider.

//Moves right when z is pressed
        if (Input.GetKey("z")){
        transform.position -= Vector3.right * speed * 2* Time.deltaTime;
        }
        //Moves left when v is pressed
        if (Input.GetKey("v")){
        transform.position += Vector3.right * speed* 2 * Time.deltaTime;
        }

[IJM]

For something like that you can use Rigidbody: http://unity3d.com/support/documentation/Components/class-Rigidbody.html

And you set the Velocity if you want to move it in a direction:

 if (Input.GetButtonDown ("z")) {
        rigidbody.velocity = -(Vector3.right * speed * 2* Time.deltaTime);
    }