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it View Insert Format Font Tools Table Window Help PHY 121 Hybrid Sp 2018 Hw 2.d

ID: 1575287 • Letter: I

Question

it View Insert Format Font Tools Table Window Help PHY 121 Hybrid Sp 2018 Hw 2.docx 150% A HomeLayout Document Elements Tables Charts SmartArtReview Paragraph Times New Romanj.| 12 | | |A-i A. | A- PHY 121 Hybrid Spring 2018 SHOW ALL WORK ON A SEPARATE SHEET OF PAPER Homework #2 10 1. Questions based on the following graph. (3 points) x (m) 10 8 6 4 -21_ 1 2 3 4 5 7 -4 -6 a. Find the average velocity fromt-0 to t 2 seconds b. Find the average velocity fromt-4 to t-5 seconds. c. Find the average velocity from t -5 tot - 7 seconds

Explanation / Answer

a) Distance travelled from t=0 to t=2 seconds = 10m

Time taken=2-0=2 seconds

average velocity = 10/2=5 m/s

b)distance travelled from t=4 to t=5 seconds = 0 m

average velocity = 0

c)distance travelled from t=5 to t=7 seconds = -5-5=-10m

time taken = 2 seconds

Average velocity =-10/2=-5 m/s