Jump doesn't work properly

Questions & Answers
1

I want it to jump SMOOTHLY but it just teleports the object high up.

This is my script -

public Rigidbody rb;
public Camera cam;
public bool isGrounded = false;
[Header ("Movement")]
public float speed = 5f;
public float jumpForce = 1f;

// Start is called before the first frame update
void Start()
{
    rb = GetComponent<Rigidbody>();
}

// Update is called once per frame
void Update()
{
    float horizontalSpeed = Input.GetAxis ("Horizontal");
    float verticalSpeed = Input.GetAxis ("Vertical");
    Vector3 Movement = new Vector3 (horizontalSpeed, 0f, verticalSpeed);
    Movement = Camera.main.transform.rotation * Movement;

    rb.velocity = Movement * speed;

    if (jumpForce <= 15f && Input.GetKey(KeyCode.Space))
    {
        jumpForce ++;
    }
    if (Input.GetKeyUp(KeyCode.Space) && isGrounded == true)
    {
        rb.AddForce(new Vector3(0f, jumpForce, 0f), ForceMode.Impulse);
    }
}
void OnCollisionEnter(Collision other)
{
    if (other.gameObject.transform.position.y <= transform.position.y)
    {
        isGrounded = true;
        jumpForce = 1f;
    }
}
void OnCollisionExit(Collision other)
{
    isGrounded = false;
}

}

2

This is happening because of Impluse force. You can get its meaning from its name. “Impluse”.

You Can use velocity as well or forcemode.acceleration or forcemode.force

 if (Input.GetKeyUp(KeyCode.Space) && isGrounded == true)
 {
     rb.AddForce(new Vector3(0f, jumpForce, 0f), ForceMode.force / acceleration);
 }

   // or use velocity
if (Input.GetKeyUp(KeyCode.Space) && isGrounded == true)
 {
     rb.velocity += Vector3.up * jumpForce;
 }