P1200 Group Work #2 (Wednesday) Date: 9/6/2023 Problem 2 Dhalia heads out for a bike ride. She accelerates from rest up to 3.0m/s over the span of 2.0s. Then she maintains a constant speed for 4.0s. Then, suspecting that she may have forgotten her phone at home, she slams the brakes and comes to rest over the span of 1.0s. She spends 5.0s checking her pockets while at rest, but comes up empty handed. (You may assume constant acceleration for each part of this motion.) (a) Use the graphs below to qualitatively plot Dhalia's position, velocity, and acceleration throughout the trip. (You will make things quantitative in the parts that follow.) Hint: it's best to start by focusing on either the velocity or the acceleration graph. Save the position graph for last. 2P1200 Group Work #2 (Wednesday) Date: 9/6/2023 (1)) Dlmlin's motion can be broken into four parts. Completely ll out the table below in order to keep track of her position, velocity, and Eweelerzttion throughout the motion. (Suggestion: start by entering what you know into the rst column. Whenever you run into {1.11 empty cell, search for :L kinematic equation where the only unknown corresponds to that empty cell. Then solve for that unknown!) \\Part#1 Part #2 Part #3 Part#4 (c) How much time elapsed between the beginning and the end of this motion? ((1) What was Dlu1.lia.'s average speed during this motion? P1200 Group Work #2 (Wednesday) Date: 9/6/2023 Problem 1 A lamp can he set to three (lierent angles, A, B, and C. A ball is rolled up the ramp three different times= once for each angle. The position versus time along; the ramp is shown below. (T .......................................... (a) Bank the three trials according to the time it took for the bell to go up and down the ramp, starting from longest to shortest. (1')) Which ball goes the furthest along the ramp? (c) Bank the three trials according to the balls initial velocity, from fastest to slowest. [(1) Rank the three trials according to the angle of incline, from steepest to least steep. (e) Consider trial C. Is there. any time at which the veloeity of the ball is Zero? If so indicate. this on the. graph