Squid are the fastest swimmers among invertebrates. A cavity within the squid is filled with water. The

Question:

Squid are the fastest swimmers among invertebrates. A cavity within the squid is filled with water. The mantle, a powerful muscle, squeezes the cavity and expels the water through a narrow opening (the siphon) at high speed. Using momentum conservation, explain how this propels the squid forward. How is the squid's swimming mechanism like a rocket engine?