# Projectile physics question

**URL:** https://forum.kirupa.com/t/projectile-physics-question/271626
**Category:** flash
**Created:** [September 25, 2008, 3:04pm UTC](https://forum.kirupa.com/t/projectile-physics-question/271626 "2008-09-25T15:04:27Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![theMonitor](https://avatars.discourse-cdn.com/v4/letter/t/ecb155/32.png) [@theMonitor](https://forum.kirupa.com/u/theMonitor)
#### Post date: [September 25, 2008, 3:04pm UTC](https://forum.kirupa.com/t/projectile-physics-question/271626/1 "2008-09-25T15:04:27Z")

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I’ve created a very simple ballistics game, where a projectile can be thrown with varying force along a scrolling background - very much along the lines of a ‘penguin throwing’ game. So far so good… but at the moment the projectile moves with an initial x and y velocity, and what I would prefer is for the user to be able to input an angle and force of throw.

Could anyone enlighten me on how to calculate the x and y velocities, given an angle of throw from the horizontal and a force of throw?

Thanks in advance to any who’s able to help