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Chapter 9: Q. 8 (page 227)

FIGURE is the kinetic-energy graph for a 2.0 kg object moving along the x-axis. Determine the work done on the object during each of the four intervals AB, BC, CD, and DE.

Short Answer

Expert verified

Work Done by

AB: =-4J

BC: =0J

CD:=2J

DE:=2J

Step by step solution

01

Step 1. Given Information

We have been given kinetic energy versus time graph

2.0 kg object moving along the x-axis.


02

Step 2. Find the work done

We will use the concept that change in kinetic energy is equal to work done.

AB∆KAB=KfAB-KiAB=0-4=-4JBC∆KBC=KfBC-KiBC=0-0=0JCD∆KCD=KfCD-KiCD=2-0=2JDE∆KDE=KfDE-KiDE=4-2=2J

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