Objectives Describe motion in terms of frame of reference, displacement, time and velocity Calculate the displacement of an object travelling at a known velocity for a specific time interval Construct and interpret graphs of position versus time
Motion in one dimension is the simplest form of motion
Frame of reference : a system for specifying the precise location of objects in space and time
Displacement is change in position
Table 1.4
Velocity
Average velocity
Practice
Speed VS Velocity
Time (s) Displacement (m) 1 4.0 4.0 2 8.0 8.0 3 12.0 12.0 4
Instantaneous velocity
Acceleration Describe motion in terms changing velocity Compare graphical representations of accelerated and non accelerated motions. Apply kinematic equations to calculate distance, time, or velocity under conditions of constant acceleration.