The explosion power of minecarts with TNT is increased with the speed of the projectile that activated them

The damage of TNT minecarts is influenced by the travel speed of the flaming projectile that activated it. This is likely related to the intended mechanic where TNT minecarts that themselves are faster-moving deal more damage when they explode, but it is incorrectly affecting the power of stationary minecarts depending on incoming flaming projectile speed.

Expected Result: TNT minecarts increase damage when they are moving fast

Observed Result: TNT minecarts increase damage when they are moving fast OR when they are hit by a fast flaming projectile