In the gure below, force F43 has twice the magnitude of force FA. Find the direction in which the particle accelerates in this gure. Give your answer as a positive angle (measured counter-clockwise) from the positive x- axis. Image size: s M L Ma During each heartbeat, about 80 g of blood is pumped into the aorta in approximately 0.20 3. During this time, the blood is accelerated from rest to about 1.0 cm/s. What is the average net force on the blood during this time? [For this problem, treat the blood volume of blood that is moved from the heart to the aorta as a solid mass, neglecting deformation, and turbulence]