How to make my player object increase its speed as it moves.

Questions & Answers
1

I am making a game based on speed. It is a ball that moves slowly at the start of a level, but increases in speed as it moves. Only problem is, I have no idea how to make in increase in speed with the code I have written (Based on the Brackeys make a game tutorial). Here is the code I have. I would also like the incline of platforms to affect the speed. Thank you in advance!

#pragma strict

var rotationSpeed = 100;
var jumpHeight = 4;

private var isFalling = false;

function Update () 
{
	//Handle ball rotation
	var rotation : float = Input.GetAxis ("Horizontal") * rotationSpeed;
	rotation *= Time.deltaTime;
	rigidbody.AddRelativeTorque (Vector3.back * rotation);
	
	//Handle Jump
	if (Input.GetKeyDown(KeyCode.Space) && isFalling == false)
	{
		rigidbody.velocity.y = jumpHeight;
		isFalling = true;
	}	
}

function OnCollisionStay ()
{
	isFalling = false;
}
2

Check rigidbody.angularVelocity
In the Project settings => Physics there is max angular velocity. You might be hitting it.

Also I’d suggest this formula for your rotation factor:

rotation = rotation + maxRotation * Time.deltaTime / levelDuration;
rotation = Mathf.Clamp(rotation , minRotation , maxRotation);

That will give you a lot more control as level duration is the time you want it to take to get up to maxRotation from, I assume, 0.