Course Home xC The Kinetic Energy OfA X www.chegg.com homework help questions an
ID: 1785239 • Letter: C
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Course Home xC The Kinetic Energy OfA X www.chegg.com homework help questions and answers kinetic energy rolling bilard-ball en-ke-1-2mv2-sup MasteringChemsty.hwk 7: Chapter 6-Google Chrome Secure https://session.masteringchemistry.com/myct/itemView2assignmentProblemID-86318322 Hiwk.7 ChapterExercise 6.97 Exercise 6.97 Part A Calculate te for the process Express your answer using two significant figures. The kinetic energy of a rolling billiard ball is given by KE = 1/2 m- ball is rolling down a pool table with an initial speed of 45 m/s As it travels, it loses some of its energy as heat. The ball slows down to 4.0 m/s and then colides head-on with a second billiard ball of equal mass. The first billiard ball completely stops and the second one rolls away with a velocity of 4.0 m/s. Assume the first billard ball is the system | suppose a o 17-kg billard Submit My Answers Give Up Incorrect Try Again; 4 attempts remaining Part B Calculate q for the process Express your answer using one significant figure. SubmitExplanation / Answer
Given,
Mass, m = 0.17 kg
Initial velocity, u = 4.5 m/s
Initial KE = 0.5 x 0.17 x 4.52 = 1.72 J
Final KE = 0 J (as final velocity is zero)
Delta E = Final KE- initial KE = -1.72 J
KE = 0.5 x 0.17 x 42 = 1.36 J
q = 1.36 - 1.72 = -0.36 J
w = -1.72 + 0.36 = - 1.36 J
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