using System; using L=Science.Physics.GeneralPhysics; namespace Serway.Chapter05 { /// /// Example11: Why does the sled accelerate? /// A horse pulls a sled along a level, snow-covered road, /// causing the sled to accelerate. Newton's third law states /// that the sled exerts a force of equal magnitude and /// opposite direction on the horse. In view of this, how /// can the sled accelerate - don't the forces cancel? Under /// what condition does the system (horse plus sled) move /// with constant velocity? /// public class Example11 { public Example11() { } private string result; public string Result { get{return result;} } public void Compute() { result = "Read the book!"; } } }