A flipper is a segment from its pivot to its tip, so hitSegment already knows how to bounce the ball off it. We
check both flippers in every small step, a little less springy than the walls.
```js
for (const f of flippers) {
const t = tip(f)
hitSegment(f.x, f.y, t.x, t.y, 0.3)
}
```
What it means
For each flipper, find its tip and treat pivot → tip as a wall with a bounce of 0.3.
Your turn
In step, under BUMPERS.forEach(hitBumper), write the four lines.