[2D] Character keeps sliding when I add velocity to the rigidbody2D?

Questions & Answers
1

Hello!
I am new to Unity and would like to know if I could make my 2D character stop sliding when I release the W key or the S key (W=Forward, S=Backwards). I tried messing with Rigidbody2D but it keeps sliding. Any help? Here is my script:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CharacterMove : MonoBehaviour
{
    public Rigidbody2D rb;
    public bool isGrounded = false;
    void Update()
    {
        if(Input.GetKey("w")){
            rb.velocity += new Vector2(1,0);
            transform.rotation = Quaternion.Euler(0, 0, 0);
        }
        if(Input.GetKey("s")){
            rb.velocity += new Vector2(-1,0);
            transform.rotation = Quaternion.Euler(0, 180, 0);
        }
        if(Input.GetKeyDown("space")){
            if(isGrounded == true){
                rb.velocity += new Vector2(0,10);
            }
        }
    }
    void OnCollisionEnter2D (Collision2D col){
        if(col.collider.tag=="Ground"){
            isGrounded=true;
        }
    }
    void OnCollisionExit2D (Collision2D col){
        if(col.collider.tag=="Ground"){
            isGrounded=false;
        }
    }
}
2

try this code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class CharacterMove : MonoBehaviour
 {
     public Rigidbody2D rb;
     public bool isGrounded = false;
     void FixedUpdate() //FixedUpdate is better than Update when working with a rigidbody
     {
         if(Input.GetKey("w")){
             rb.velocity += new Vector2(1,0);
             transform.rotation = Quaternion.Euler(0, 0, 0);
         }
         if(Input.GetKey("s")){
             rb.velocity += new Vector2(-1,0);
             transform.rotation = Quaternion.Euler(0, 180, 0);
         }
         //if not getting the S or W keys pressed stop the player from moving on the x axis
         if(!Input.GetKey("s") && !Input.GetKey("w")){
         rb.velocity = new Vector2(0, rb.velocity.y);
         }
         if(Input.GetKeyDown("space")){
             if(isGrounded == true){
                 rb.velocity += new Vector2(0,10);
             }
         }
     }
     void OnCollisionEnter2D (Collision2D col){
         if(col.collider.tag=="Ground"){
             isGrounded=true;
         }
     }
     void OnCollisionExit2D (Collision2D col){
         if(col.collider.tag=="Ground"){
             isGrounded=false;
         }
     }
 }