Final answer:
The normal component of acceleration of point B, while piston P is moving to the right, is towards point A, perpendicular to bar BP.
Step-by-step explanation:
If piston P is moving to the right, the normal component of acceleration of point B will be in the direction perpendicular to bar BP towards point A, assuming that the system is a typical piston and crank mechanism. This is because as piston P moves to the right, point B on the connecting bar BP must move in a circular path around point A, which is the center of rotation of the crank. Hence, the normal component of acceleration, which is directed towards the center of the circular path that point B follows, is away from point P and towards point A.