Two descriptions about physical quantities are given below: Quantity A: It has the same unit as force. Quantity B: It measures the amount of matter in an object. What quantities are these most likely describing? (4 points) Both Quantity A and Quantity B are mass. Both Quantity A and Quantity B are forces. Quantity A is weight and Quantity B is mass. Quantity A is mass and Quantity B is weight.

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.