How to code the projectile of a ball of different force and angle in Java Swing?

Question

I have written the following function for projectile motion of different force and angle, but it doesn\'t work properly. Where have I gone wrong? I want something like the A

Answer 1

The formulae you created for x- and y-displacement are both missing a time factor in the first term. Below, I placed your code above and the correct code below, for comparison, so you can see exactly what you left out.

For X Displacement

• (ball.getX()+10)*Math.cos(radians)+ ...
• (ball.getX()+10)*time*Math.cos(radians)+ ...

For Y Displacement

• (ball.getY()+10)*Math.sin(radians)+ ...
• (ball.getY()+10)*time*Math.sin(radians)+ ...

I referenced Wikipedia's equation for displacement as a function of radians to answer your question.