Glide

hold to climb, let go to glide. rock to rock.

hold to climb, let go to glide: eight hops along a coast, where the height you let go at decides where you land

Climbing costs feathers, which grow back only on grass; gliding costs none. A glide trades height for distance at a fixed rate, its glide ratio: here about 2.2 across for every 1 down, less into a headwind, more with one behind. Warm air rising over a rock is the only height that comes free.

Concepts: energy, trajectory, physics.

An interactive you play with one thumb, on Wundr.