1-D Motion Displacement, Position, and Distance Velocity vs. Speed Frame of Reference

Frame of Reference x=975 ft. x=0 x=1000 ft. Where is the grizzly?

Position vs. Displacement Reference point or origin x=975 ft. x=0 x=1000 ft. positions Position depends upon your frame of reference.

Position vs. Displacement Reference point or origin x=475 ft. x=975 ft. x=0 x=1000 ft. x=500 ft. positions If we change our frame of reference, Then our positions change.

Position vs. Displacement x=975 ft. 25 ft. x=0 x=1000 ft. Displacement is the difference in positions.

Position vs. Displacement Reference point or origin x=975 ft. x=475 ft. 25 ft. x=0 x=1000 ft. x=500 ft. If we change our frame of reference, the displacement stays the same.

1-D Motion

Displacement Displacement is change in position. Displacement can be positive or negative.

Velocity Average velocity is displacement in a given time.

Finding displacement from velocity and time. The high-speed train travels from Paris to Lyons at an average velocity of +227 km/h. The trip takes 2.00 h. How far is Lyons from Paris?

Finding displacement from velocity and time. Paris 227 km/h Lyons Dt=2h Unknown Dx

Finding displacement from velocity and time. Paris 227 km/h Lyons Dt=2h Unknown Dx