Perceptle Track: predict the landing and Friday bounces

1. Watch the ball’s sideways movement as well as its height.
2. Notice whether it is still rising, near the top, or already falling when it disappears.
3. Imagine the remaining arc continuing down to the ground.
4. Tap or click that horizontal position. Compare the reveal with your chosen mark.

A ball still rising has longer left in the air than one near the ground on its descent. Dropping a mark straight below its final visible point ignores the horizontal motion that is still to come.

Gravity changes the vertical speed throughout the flight. A straight tangent through the last visible positions is a useful sense of direction, but the path bends downward. First judge which stage of the arc you saw, then estimate the time remaining and the sideways distance it can cover.

For practice, describe each visible segment as rising, cresting or falling before marking. That makes it easier to spot the same-direction error across several attempts. The diagram illustrates an arc; it is not a recorded daily flight.

Friday uses weaker gravity and a ball that ricochets from the side walls. The original inner wall positions are x=24 and x=776 on its 800-unit-wide field. The generator requires at least one bounce somewhere during the full flight; the daily answer shows whether a bounce also occurs after the visible segment.

As a one-wall example, an unreflected landing at x=1,000 overshoots the right wall by 224. Reflect that distance back to get x=552. Multiple bounces need repeated reflections, rather than one subtraction. See the other Friday changes.

The original play field is 800 × 500 internal units. A landing at x=400 is halfway across the full field on a phone or a desktop. Those units are not physical display pixels. For the original horizontal landing task, a 60-unit miss is one Normal tolerance and scores about 61; Friday uses 90 units.

The independent IO implementation uses an 800 × 440 field and its own trajectory generator. Do not take an IO arc or coordinate as the answer to an original daily puzzle. Use the appropriate scoring model when exploring a miss.

• Usually too short: you may be ignoring motion after the last visible point, especially while the ball is still rising.
• Usually too far: check whether you are extending a falling ball for too long.
• Friday on the wrong side: follow the wall reflection before estimating the ground position.
• Numbers look different on mobile: compare a fraction of the same field, not screenshot pixels.

These are patterns to check, not conclusions from one low score. Compare a handful of actual landing positions with your marks, then make one adjustment. Independent Track practice offers fresh Normal trajectories.