(1 point) At a point P in the xy-plane where distances are measured in feet, the unit tangent vector to an object's path is 10 (-3, 1), the curvature of its path at P is 0.8 feet 1, and its acceleration vector is (4,5) feet/second. (a) At what rate is the object speeding up at P? sqrt(25+16) ft/s^2 Include units on your answer. (b) What is the object's speed at P? sqrt(10) ft/s Include units on your