minecraft-packets/minecraft-packets/data/bedrock/1.17.0/from-server/set_entity_motion/0.json

An easy way to query PrismarineJS/minecraft-packets

{
  "runtime_entity_id": "11",
  "velocity": {
    "x": -0.23178373277187347,
    "y": 0.040462542325258255,
    "z": -0.06201750412583351
  }
}