Addforce increases the object's speed overtime

Questions & Answers
1

I am trying to addforce to an object to let it constantly move to the right on a fixed speed. But when I try it with the following code, the speed starts slowly and starts adding up and going very fast over time. How can I keep the speed to be constant without adding on.

I do not want it to start slowly. I want it to immediately react to the speed and keep to the same speed through out.

I am trying to use AddForce instead of switching to manipulating velocity directly. Please advice what I am doing wrong.

public float speed = 15;
Rigidbody2D rb;

void Start()
{
    rb = GetComponent<Rigidbody2D>();
}

void Update()
{
    rb.AddForce(Vector2.right * speed * Time.deltaTime);
}
2

You could use

rb.velocity = new Vector2(direction * speed * Time.deltaTime, rb.velocity.y);
3

Something you can attempt is to give your object a jolt of speed at the beginning and then add force over time afterwards I would do this_>

if (rb.velocity < 10)
{rb.AddForce(Vector2.right * speed, forcemode2d.Impulse);}
else
{
    rb.AddForce(Vector2.right * speed * Time.deltaTime);
}

that 20 can be changed to whatever you want your threshold to be.

So if your velocity is under 10, give it a large speed boost, after that just add a minor amount of force