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Lab activity information. Vi = 0 m/s T = 10 s Find d = Find v f =. Chapter 4 Problems. Guided Practice Problems. Problem #1. Find the uniform acceleration that causes a car’s velocity to change from 32m/s to change to 76 m/s. In an 8.0 s period. Problem #1. Unknown: a =. Given: - PowerPoint PPT Presentation

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Chapter 4 Problems

Vi = 0 m/sT = 10 sFind d =Find vf = Lab activity informationChapter 4 ProblemsGuided Practice ProblemsFind the uniform acceleration that causes a cars velocity to change from 32m/s to change to 76 m/s. In an 8.0 s period.Problem #1Given:Vi = 32 m/sVf = 76 m/sT = 8.0 sUnknown: a = Problem #1Equation:A = v tProblem #1Answer: 5.5 m/s/sProblem #1Solution:76m/s-32m/s / 8 s =Problem #1A supersonic jet flying at 155 m/s is accelerated uniformly at the rate of 23.1 m/s2 for 30 s.A. What is its final velocity?B. The speed of sound in air is 331 m/s. How many times the speed of sound is the planes final speed?Problem #2Given:Time = 30 sA = 23.1 m/s2Vi = 155 m/s______________Vf =Speed of sound is 331 m/sUnknown:Vf =Problem #2Equation: AVf = vi + atProblem 2Equation B:N= 848 m/s/331m/s=Problem #2Answer to A = 848 m/sProblem #2Answer to B:2.56 timesProblem #2Solutions for A:155m/s + (23.1 m/s/s)(30.0 s) =vfProblem #2Solution for B :848 m/s/331m/s =Problem #2Determine the displacement of a plane that is uniformly accelerated from 66 m/s to 88 m/s in 14 s.Problem #3Given: 66 m/s = Vi88 m/s = VfT = 14 sUnknown: dProblem #3EquationD=(vf + vi)t/2 =Problem #3Answer #3: 550 mProblem #3Solution #3 :(88 m/s + 66 m/s)14 s/2 =Problem #3If a bullet leaves the muzzle of a gun with a speed of 500 m/s, and the barrel of the rifle is .9 m long. What is the acceleration of the bullet while in the barrel?Problem #4Given: Vf = 500 m/sD = .9 mVi = 0 m/sUnknown:A =Problem #4Equation: a = Vf2 vi2 /2dProblem #4Answer :1.38 X 105 m/s/sProblem #4Solution:(500 m/s)2-0 /(2) (0.9 m) =Problem #4A plane travels 600 m while being accelerated uniformly from rest at the rate of 5.0 m/s2. What final velocity does it attain? Problem #5Given: d = 600 m a= 5.0 m/s2Vi = 0 m/s Unknown: Vf =Problem #5Equation:Vf2 =vi2 + 2adProblem #5Answer: 77.5 m/s Problem #5Solution: Sq root 0 +2(5.0 m/s/s)(600 m) =Problem #5Page 82: 1,5, Page 83 : 8,9,10, 16Page 84: 24, Reviewing concepts: 1,2,3,8,Applying concepts: 3, 8, 9Due thursdayAssignmentVf = vi + at d = (vf + Vi)t d = vit + at2Vf2 = vi2 + 2adVi vf a t Vi d vf tVi d a t Vf d vi a Equations of Motion for Uniform acceleration