Rigidbody Addforce Not Working

Questions & Answers
1

I Have The Following Script For a Simple Rigidbody Movement, but When I Press Keyboard Keys It Doesn’t Move At All. Keep In Mind That I Didn’t Change Any Of Rigidbody’s Settings.
Code:

public class CharacterMovement : MonoBehaviour
{
    bool IsForward, IsRight, IsLeft, IsBackward;
    Rigidbody rb;
    public float MoveSpeed = 10;
    void Awake()
    {
        rb = GetComponent<Rigidbody>();
    }
    void Update()
    {
        if (Input.GetKey(KeyCode.A))
            IsLeft = true;
        if (Input.GetKey(KeyCode.S))
            IsBackward = true;
        if (Input.GetKey(KeyCode.D))
            IsRight = true;
        if (Input.GetKey(KeyCode.W))
            IsForward = true;
    }
    void FixedUpdate()
    {
        if (IsLeft)
        {
            rb.AddForce(-transform.right * MoveSpeed * Time.deltaTime);
            IsLeft = false;
        }
        if (IsBackward)
        {
            rb.AddForce(-transform.forward * MoveSpeed * Time.deltaTime);
            IsBackward = false;
        }
        if (IsRight)
        {
            rb.AddForce(transform.right * MoveSpeed * Time.deltaTime);
            IsRight = false;
        }
        if (IsForward)
        {
            rb.AddForce(transform.forward * MoveSpeed * Time.deltaTime);
            IsForward = false;
        }
    }
}
2

The Whole Problem Was That I Had To Pass In The ForceMode Parameter (ForceMode.Impulse) At the end of each AddForce method. Also keep in mind that you SHOULDN’T use transform for directions (forward, right, etc.) Since It is in local space and instead, use Vector3.left/up/etc. That way the gameobject will have some weird movement.
Have A Nice Day!