Target

A target is a block that provides a temporary redstone charge when hit by a projectile.

From block loot
Targets can be mined using any tool or by hand, but a hoe is the fastest way to break it.

Info
Targets emit a redstone signal when hit by most projectiles. This includes arrows, tridents, eggs, snowballs, splash potions, fire charges fired by a dispenser, firework rockets, lingering potions, bottles o' enchanting, ender pearls, and llama spit. The closer a projectile is to the center of the block, the stronger the redstone signal that is produced.

Breaking
Targets can be mined using any tool or by hand, but a hoe is the fastest way to break it.

Signal
When struck by most projectiles, the target emits redstone power for 10 redstone ticks (1 second), similar to stone buttons. Arrows and tridents will instead cause the target to emit power for 4 redstone ticks (0.4 seconds). A target can be hit with arrows, tridents, eggs, snowballs, splash potions, fire charges fired by a dispenser, firework rockets, lingering potions, bottles o' enchanting, ender pearls, or llama spit.

The strength of the signal depends on how close the projectile is to the center of the block, from 1 to 15.

The target also provides a block update when hit, meaning that an observer can detect if the target has been hit and has produced a redstone signal.

ID