Final answer:
The x component of the force exerted by water flowing through pipe A at 6 m/s is 6 N and the y component is 0 N. Therefore, the correct option is A.
Step-by-step explanation:
To determine the x and y components of the force exerted by water flowing through pipe A at 6 m/s, we can use vector decomposition. If the water is flowing horizontally, the force exerted by the water will only have an x-component and no y-component. Therefore, the x component of the force will be 6 N and the y component of the force will be 0 N.