2D Jumping... Snaps to jump height and slowly falls

I am quite perplexed right now. Last time I did a 2D project this worked perfectly. Can anyone help me out? My issue should be evident from the thread title. I've provided a video, a screenshot of the rigidbody settings for the blue player object, and the relevant code. Thanks for any help!

Code (csharp):

1.  
2. public class PlayerController : MonoBehaviour
3. {
4.     public float speed;
5.     public float xForce;
6.     public float yForce;
7.  
8.     // Update is called once per frame
9.     void Update()
10.     {
11.         float move = Input.GetAxis("Horizontal");
12.         GetComponent<Rigidbody2D>().velocity = new Vector2(move * speed, 0);
13.     }
14.  
15.     private void FixedUpdate()
16.     {
17.         if (Input.GetKeyDown(KeyCode.Space))
18.         {
19.             GetComponent<Rigidbody2D>().AddForce(new Vector2(xForce, yForce));
20.         }
21.     }
22. }
23.  

 

Figured it out. In the code where I move my player along the x axis, I am setting its y velocity to 0, so that when I try to add a vertical force or directly set its y velocity when jumping, it's constantly being reset to 0.