Part C and Part D MasteringPhysics Chapter 2-Google Cheome Secure l https//sessi

Question

Part C and Part D MasteringPhysics Chapter 2-Google Cheome Secure l https//session.rnasten offset-next&assignmentProblemID; 83564432 MasteringPhys Chahe2 Probiem O My Courses previous 3 of 13 t Part c Problem 2.34 Course Home Sylabus Assignments | 0 m Scores Course Tools eText Study Area Ere 1 User Settings What is the particle's acceleration at-1s? Express your answer to two significant figures and include the appropriate units Eigure 1) shows a velocity-versus-time graph for a particle moving along the -axis. Al t O& assume that Value Units My Answers Gve U Figure1of Incorrect, One attempt remaining: Try Again Enter your answer using dimensions of acceleration v, (m/s) Pat o What is the particle's position at t30 s? Express y answer to two signific-figures and include the appropria" units. t (s) 0 ooe@t; a. -1.3- Type here to search

Explanation / Answer

Part C:

the velocity of particle does not change between 0 to 2 seconds. Therefore, acceleration of particle at t=1s is 0

Part D:

from 0 to 2 seconds

velocity=4 m/s

Position at the end of 2 seconds = 2*4=8m

velocity from 2 to 4 seconds is v(t)=dx/dt = 4-2(t-2)=8-2t

position = 8t-t2+C

at t=2, position is 8

8=(8*2)-(22)+C

C=-4

x=8t-t2-4

At t=3, position is

(8*3)-(32)-4 = 11m

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