(7%) Problem 13: Adetailed graph of position versus time is shown. 15.0 The vertical dashed lines divide the graph into ve time intervals where the acceleration is constant within each interval. e A 20% Part (a) What is the acceleration at! = 7.0 s in Int/32'? Grade Summary 1200 s) = | I'D/82 Deductions 0% Potential 100% Submissions Attempts remaining: 5 (0% Per attempt) _ dFailed View Degrees O Radians Submit Hint _ 1 give up! Hints: 0% deduction per hint. Hints remaining: i Feedback: 0% deduction per feedback. Submission History All Date times are dirplayed in Central Standard meRed submission dale limes indicate [are work. Date Time Answer Hints Feedback E a 20% Part (b) What is the acceleration at: = 12.0 in 1121/32? E a 20% Part (c) What is the velocity at t = 12.0 in mfs'? E 3 20% Part (d) What is the acceleration att = 17.0 in m/sz? E 5 20% Part (2) What is the average velocity during the interval from 25 s to 23 s in this? (7%) Problem 14: An object moves along a track on a lab table, and a position versus time graph is presented. D St 50% Part (a) Select the option that best describes the motion of the object. 0 Starting at rest, the object undergoes acceleration in the negative direction. After attaining a maximum speed, the acceleration Exiting "y 0% becomes positive until the object is once again at rest. Potential 100% 0 Starting at rest, the object undergoes acceleration in the negative direction. After attaining a maximum speed, the acceleration ceases, and the object continues to move with constant speed. Submissions 0 The object is initially moving with a constant speed towards the negative direction. About half way through the time period ggisgng' '1 shown, acceleration slows the object, bringing it momentarily to rest. The direction reverses, and the object moves increasingly fast in (lama view the POSiILlVe diIBCIion. l 0% The object is initially moving with a constant speed in the positive direction. About half way through the time period shown, acceleration slows the object, bringing it momentarily to rest. The direction reverses, and the object moves increasingly fast in the negative direction. 0 Starting at rest, the object undergoes acceleration in the positive direction. After attaining a maximum speed, the acceleration ceases, and the object continues to move with constant speed. 0 Starting at rest, the object undergoes acceleration in the positive direction. After attaining a maximum speed, the acceleration becomes negative until the object is once again at rest. Submit ' I give up! Hints: i for a 0% deduction. Hints remaining: 2 Feedback: 0% deduction per feedback. Submission History All Date times are dirptayed in Central Standard Hmeed submission dale timer indicate tale work. Date Time Answer Hints Feedback 1 Feb 13, 2022 7:19 AM The object is initially moving with a constant speed in the positive direction. About half way through the time Note: Feedback period shown, acceleration slows the object, bringing it momentarily to rest. The direction reverses, and the object not accessed. moves increasingly fast in the negative direction. E A 50% Part (b) To form a different representation of the motion, the position, at equal time intervals, is represented with black dots, and a displacement vector connects each position to the next in the sequence. Select the motion diagram that corresponds to the position versus time graph in the problem statement. Note that for these motion diagrams, to the right is the positive direction