Presentation on theme: "Graphing Motion in One Direction Section 5.1"— Presentation transcript:
1 Graphing Motion in One Direction Section 5.1 Physics
2 ObjectivesInterpret graphs of position versus time for a moving object to determine the velocity of the object.Describe in words the information presented in graphs and draw graphs from descriptions of motion.Write equations that describe the position of an object moving at constant velocity.
3 Position Time GraphsPosition-time graphs can be used to find out the location of an object at time instant.What is a time instant?An instant is shorter than any measurable amount.
7 Example Problems Describe the motion of the 4 walkers. Walks east at a constant velocity.EastWalks east at a constantvelocity that is slower thanWalker B.BHigh St.Walks west of High St. First quickly,then slows to a stop.CWestDStarts east of High St. and walks westat a constant velocity.
16 Using an Equation to Find Where and When Recall the equation for average velocity.v = Δd / Δtv = d1 – d0 / t1 – t0If you choose your axis for time to start at 0 seconds, t0 can be eliminated since it equals zero.d1 = d0 + vt1
17 A Few ModificationsWe will be working with constant velocity, so average velocity will be treated as the constant velocity value.The equation then becomes:d = d0 + vt