Question

What does this program do?

var ball;

function start(){
ball = new Circle(40);
add(ball);
setTimer(draw, 20);
}

function draw(){
(2, 2);
}

Answer 1

The program is meant to move a ball on the screen using vectors to simulate various types of motion, but the function responsible for movement is incomplete.

Step-by-step explanation:

The program provided seems to represent a simplified version of a simulation that involves moving a ball on the screen, potentially related to graphical simulations or game development. The function start() creates a new object, ball, which is a circle with a radius of 40 units and adds it to the display. It sets a timer that calls the draw() function every 20 milliseconds. However, the draw() function appears incomplete and presumably is meant to update the position of the ball to simulate motion. In a complete program, you might expect the draw() function to include vector updates that allow the ball to move in a path such as linear motion, simple harmonic motion, or in a circle.