PHYS2091 Unit 2 AS: Homework 2 Description: The purpose of this assignment is to develop problem-solving skills using real-life examples. The students will engage in problems ranging from everyday activities to the applications of physics in biology. Instructions: This assignment has 15 questions of various complexities. Upload your answers as a single PDF file on Blackboard. 35 points CSLO 1, 2, 3 1. (2 points) A commuter backs her car out of her garage with an acceleration of 1.40 m/s2. (a) How long does it take her to reach a speed of 2.00 m/s? (b) If she then brakes to a stop in 0.800 s, what is her deceleration? 2. (2 points) An Olympic-class sprinter starts a race with an acceleration of 4.50 m/s2. (a) What is her speed 2.40 s later? (b) Sketch a graph of her position vs. time for this period. 3. (3 points) Blood is accelerated from rest to 30.0 cm/s in a distance of 1.80 cm by the left ventricle of the heart. (a) Make a sketch of the situation. (b) List the knowns in this problem. (c) How long does the acceleration take? To solve this part, first identify the unknown, and then discuss