A Squid Ejects a Bolus of Water in Order to Escape

Multiple Choice

A squid ejects a bolus of water in order to escape a predator. The squid has a mass of 0.4 kg with its water cavity empty, and needs to escape with a speed of at least 0.8 m/s. If the ejected water has a mass of 0.1 kg, how fast must it be ejected in order for the squid to escape?

A) 4.0 m/s
B) 3.2 m/s
C) 1.6 m/s
D) 0.8 m/s