Mastering Physics: HW9 Google Chrome Secure https:// 76013058 PHYSICS-I-A Help C

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Mastering Physics: HW9 Google Chrome Secure https:// 76013058 PHYSICS-I-A Help Close HW9 Problem 9.8 previous l 1 of 16 l next Problem 9.8 Part A (Figure 1) is the kinetic-energy graph for a 2.0 kg object Determine the work done on the object during each of the four intervals AB, BC, moving along the z-axis. CD, and DE. Express your answers using one significant figure. Enter your answers numerically separated by a comma. Figure 1 of 1 K (J) WAB, BC WCD, WT DE Submit My Answers Give U Provide Feedback Continue A B C D E

Explanation / Answer

From work energy theorem

workdone = change in kinetic energy

For ech interval, work done is

AB = 0 - 4 = -4 J
BC = 0 - 0 = 0 J
CD = 2 - 0 = 2 J
DE = 4 - 2 = 2 J

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