Transform inputs don't work

Question

I'm writing a C# player script for a class and when I run, the sound inputs work fine, but the movement inputs don't respond, and I don't know how to fix it.

Code:

Rigidbody rigidbody;
AudioSource audioSource;

void Start(){
    rigidbody = GetComponent<Rigidbody>();
    audioSource = GetComponent<AudioSource>();
}

void Update(){
    ProcessInputs();
}
private void ProcessInputs()
{

    if (Input.GetKey(KeyCode.Space))
    {
        rigidbody.AddRelativeForce(Vector3.up);
        if (!audioSource.isPlaying)
        {
            audioSource.Play();
        }
    }
    else
    {
        audioSource.Stop();
    }
    if (Input.GetKey(KeyCode.A))
    {
        transform.Rotate(Vector3.forward);
    }
    if (Input.GetKey(KeyCode.D))
    {
        transform.Rotate(-Vector3.forward);
    }
}

Answer 1

You have to multiply your vectors by a certain value. This value could represent a speed, distance, amount, or force.

So for example,

rigidbody.AddRelativeForce(Vector3.up);

would be

 rigidbody.AddRelativeForce(Vector3.up * 5);

and

transform.Rotate(Vector3.forward);

would be

transform.Rotate(Vector3.forward * 10);