A 0.31 kg point mass moving on africtionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exertsaforce F = bx toward P,where x is the length of the rubber bandand b is an unknown constant. The mass movesalong the dotted line. When it passes pointA, its velocityis 3.6 m/s directed as shown.The distance AP is 0.6 mand BP is 1.0 m.