Fig. P1.61, p.21

Position Defined in terms of a frame of reference –One dimensional, so generally the x- or y- axis

Displacements

Distance Distance may be, but is not necessarily, the magnitude of the displacement Blue line shows the distance Red line shows the displacement

Velocity and Speed It takes time for an object to undergo a displacement The average velocity is rate at which the displacement occurs generally use a time interval, so let t i = 0 Speed is a scalar quantity –same units as velocity –total distance / total time May be, but is not necessarily, the magnitude of the velocity

Instantaneous Velocity The limit of the average velocity as the time interval becomes infinitesimally short, or as the time interval approaches zero The instantaneous velocity indicates what is happening at every point of time

AF_0201.swf AF_0203.swf

Acceleration Changing velocity (non-uniform) means an acceleration is present Acceleration is the rate of change of the velocity Units are m/s² (SI), cm/s² (cgs), and ft/s² (US Cust)

Fig. 2.9, p.35 Do quiz 2a, 1-4

Fig. 2.10, p.36

Fig. 2.7, p.33

Kinematic Equations

Fig. 2.12, p.39

Fig. 2.14, p.43

AF_0213.swf

Vector Quantities Vector quantities need both magnitude (size) and direction to completely describe them –Represented by an arrow, the length of the arrow is proportional to the magnitude of the vector –Head of the arrow represents the direction –Generally printed in bold face type Scalar Quantities Scalar quantities are completely described by magnitude only

Fig. 3.9, p.62

AF_0306.swf

Fig. 3.11, p.63

Fig. 3.13a, p.65

Fig. 3.13b, p.65

Fig. 3.2, p.59

AF_0302.swf

Fig. 3.14, p.65

All Students Take Calculus

Fig. 3.15, p.66