# Bounce Not Working Correctly? Creating Pong **URL:** \ **Category:** Questions about Thunkable X\ **Tags:** tcanvas\ **Created:** [January 6, 2020, 7:15pm UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532 "2020-01-06T19:15:17Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![brad.strassburger](https://avatars.discourse-cdn.com/v4/letter/b/ec9cab/32.png) [@brad.strassburger](https://community.thunkable.com/u/brad.strassburger)\ **Post date:** [January 6, 2020, 7:15pm UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/1 "2020-01-06T19:15:17Z")
I am having a weird issue with sprites. I have a canvas and two sprites (I am creating a simple pong game). One sprite is a ball the other is a paddle. When the ball is in motion it bounces off of the walls perfectly, however, when it hits the paddle, it slows down very dramatically. I am not sure what setting might be at play here. The ball is set to bounce at 100 and the paddle at 0. Does anyone have any advice? ---
**Author:** ![domhnallohanlon](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/domhnallohanlon/32/29554_2.png) [@domhnallohanlon](https://community.thunkable.com/u/domhnallohanlon)\ **Post date:** [January 6, 2020, 8:39pm UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/2 "2020-01-06T20:39:00Z")
Hey @brad.strassburger, Not sure if this makes a difference, but in the sample Pong app, the “Bounce” attribute has no value, rather than a value of 0. ![Screenshot_20200106-202536__01](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/d/7/d7eff794e509cd7a3c91caea9bcc21fd20542c6c.jpeg) Not sure if that will make the difference, but it’s worth trying anyway! ---
**Author:** ![rothmana](https://avatars.discourse-cdn.com/v4/letter/r/f475e1/32.png) [@rothmana](https://community.thunkable.com/u/rothmana)\ **Post date:** [August 4, 2020, 12:46am UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/3 "2020-08-04T00:46:57Z")
Hello, can you please point me towards a completed sample pong app? Much appreciated! ---
**Author:** ![1negroup](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/1negroup/32/114253_2.png) [@1negroup](https://community.thunkable.com/u/1negroup)\ **Post date:** [August 10, 2021, 2:57am UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/4 "2021-08-10T02:57:59Z")
Tap Pong - [Thunkable](https://x.thunkable.com/copy/492249f513f2cbd6ab13311b55d0c8de) I think the bounce should by at 100 ---
**Author:** ![1negroup](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/1negroup/32/114253_2.png) [@1negroup](https://community.thunkable.com/u/1negroup)\ **Post date:** [August 10, 2021, 5:37am UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/5 "2021-08-10T05:37:16Z")
Nevermind This is not working for me either I am not sure why in that app it works Great but For what ever reason in my own app it doesn’t. ![Balls Movement Thunkable](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/a/e/ae9046e4c8faef9cdad31a8c27375974da3b9e4d.png) ![Balls bounce Thunkable](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/b/b/bbdbcfcbba1fe8f00ca48a5ea43cb0eeeb65075b.png) Yes my bounce is 100. I would suggest that in the Docs there could be some Explanation on Bounce, because I don’t know if its a percentage number for how well it bounces or a speed number where the speed is 100 in the opposite direction. What am I doing wrong? [https://x.thunkable.com/copy/2ee1381c59633b11e85465bf23ba4b81](https://x.thunkable.com/copy/2ee1381c59633b11e85465bf23ba4b81) ---
**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\ **Post date:** [August 10, 2021, 6:02am UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/6 "2021-08-10T06:02:01Z")
> [@1negroup](#): > > I would suggest that in the Docs there could be some Explanation on Bounce, because I don’t know if its a percentage number for how well it bounces or a speed number where the speed is 100 in the opposite direction. A Google search for \*bounce Thunkable" returns a bunch of results. The first one is the [documentation for sprites](https://docs.thunkable.com/sprites) which includes this information: > **Bounce:** When a sprite hits a surface or another sprite, this is the percentage of the speed that sprite with bounce back with. A bounce of 100 means that the sprite will bounce back at the same speed it had in its collision. A bounce of 200 will cause the sprite to bounce off with twice its speed. This is demonstrated in the GIF above under Picture List, where the beaver has a bounce of 50, or half its initial speed. ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [November 8, 2024, 11:46am UTC](https://community.thunkable.com/t/bounce-not-working-correctly-creating-pong/394532/7 "2024-11-08T11:46:10Z")