How can i make it so a ball goes in the reverse angle when its hit?

MIT App Inventor Help
1

as you see in the title, i tried doing set imgsprite heading to -45 but it doesnt work. help is appreciated

2

Figuring out your reciprocal bearing is easy:

  • If your original bearing (angle??) is between 0 and 180, add 180
  • If your bearing is between 181 and 359, subtract 180.

original heading is 45 then what you want as the 'reverse angle'??? may be 45 + 180 = 225
so your new heading might be a heading of 225 degrees

3

See

for some ball bounce math.