According to newton's second law of motion, when an object is acted upon by a net unbalanced force, what can be said about the acceleration?.

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.