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Homework 4 Chapter 4 Review questions 4, 8, 16, 29, 31, 32, 34 Plug and Chug 2, 4, 6, 8, 10 Ranking 2, 4 Exercises 8, 20, 28, 30, 38, 44, 58 Chapter 5 Review questions 10, 12, 20, 22 Plug and Chug 4 Ranking 2, 4 Exercises 12, 24, 28, 34, 38, 44, 50 Problems 2, 4 State Keplers three laws and derive Keplers third law using Newtons gravitational force equation and the equation for the centripetal force? Briefly describe Galileos two key experiments and describe the results with an equation. = 10( 2)m/s 2m 4.25m 45 o A shot putter throws a 4kg shot at a 45 o angle upward with a two-dimensional velocity of 10( 2) m/s. The shot leaves his hand at a height of 2m and takes a projectile path off of a cliff and lands on a platform located 4.25m below ground level (Hint: Cos45 o = Sin45 o = (1/ 2), (2.25) = 1.5) Calculate the horizontal distance to the platform. (Hint: You need to calculate the time to the peak height and then the time to platform.) Draw a velocity vs. time graph with zero acceleration. Draw a velocity vs. time graph with constant-positive acceleration. Draw the distance vs. time graph, corresponding to the previous graph, and draw a line representing the average velocity. Use the velocity vs. time graph to calculate the acceleration and an equation of motion to calculate the distance. CHAPTER 4 NEWTON ' S SE CON D LAW OF MOTION 61 Volume The quantity of space an object occupies. Newton's second law The acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object. Newton The SI unit of force. One newton (symbol N) is the force th at will give an object of mass 1 kg an acceleration of 1 m/s ' . SUMMARY OF EQUATIONS Weight = mg . Fner AcceleratIon: a = -- m Force = ma REV I EW QUESTIONS Force Causes Accelerati n 1. Is acceleration proportional to net force, or does accelera- tion equal net forc e? ... View Full Document

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