/summon. So long as the motion tag has the X or Z value set to a number different from 1 and 0 the exact command doesn't matter.
/summon minecart ~ ~ ~ {Motion:[10.0,0.0,0.0]} will spawn a minecart with a velocity close to 1 block/tick,(instead of 10 blocks/tick it should) and when you change the Motion tag to [0.1,0.0,0.0] the spawned minecart will be moving only slightly slower than the one with X motion tag of 10 (still way above the intended 0.1 blocks/tick)
It works the same for both X and Zo regardless of the type of minecart or the position.
Olaf Gołąb
/summon. So long as the motion tag has the X or Z value set to a number different from 1 and 0 the exact command doesn't matter.
/summon minecart ~ ~ ~ {Motion:[10.0,0.0,0.0]} will spawn a minecart with a velocity close to 1 block/tick,(instead of 10 blocks/tick it should) and when you change the Motion tag to [0.1,0.0,0.0] the spawned minecart will be moving only slightly slower than the one with X motion tag of 10 (still way above the intended 0.1 blocks/tick)
It works the same for both X and Zo regardless of the type of minecart or the position.