Unity2d Physics of Rigidbody2D when falling

Unity Engine
1

Hello,

In my scene, I have a ball and a plane. I use Rigidbody2D and Circle Collider 2d for my Ball.
And I let the ball fall down when play. But the Ball was not smooth falling.
Then I made it jumping using: this_Rigidbody2D.AddForce (new Vector2 (0, 7f), ForceMode2D.Impulse);
And It jump and fall not smooth.
I think that the physics of Rigidbody2D was not smooth.

How can I make it smoothly ?
Thank you.

2

You should put your code here. How can i know whats wrong if i cant see your code.
Btw, u should put the “rigidbody2d code” to FixedUpdate.