Term
What is necessary to describe motion? 

Definition


Term

Definition
system of objects that are not moving with respect to one another 


Term

Definition
movement in relation to a frame of reference 


Term

Definition
length of path betweentwo points 


Term
Measuring displacement (KEY!!) 

Definition
displacement is the direction from the starting point and the length of a straight line from the starting point to the ending point 


Term

Definition
quantity that has magnitude and direction 


Term

Definition


Term

Definition
vector sum of 2 or more vectors 


Term

Definition
ratio of the distance an object moves to the amountof time the object moves 


Term
average speed and instantaneous speed (KEY!!) 

Definition
average speed is computed for the entire duration of a trip and instantaneous speed is measured at a particular instant 


Term
formula for speed or average speed 

Definition
average speed= total distance/ total time or v= d/t 


Term

Definition
is the rate at which an object is moving at a given moment in time 


Term

Definition
the slope of a line on a distancetime graph is speed 


Term

Definition
the speed and direction in which an object is moving 


Term
velocity is a description of...... 

Definition
both speed and direction of motion. velocity is a vector 


Term

Definition
two or more velocities add by vector addition 


Term

Definition
the rate at which velocity changes 


Term
acceleration can be described as..... 

Definition
changes in speed, changes in direction, or changes in both. Acceleration isa vector 


Term

Definition
the movement of an object towards earth solely because of gravity 


Term

Definition
a steady change in velocity 


Term

Definition
acceleration= changes in velocity/ total time or a= Vf Vi/ t 


Term
graphs of accelerated motion 

Definition
slope of a speedtime graph is acceleration 


Term

Definition
the displayed data on the graph form straightline parts 


Term
distancetime graphs (nonlinear graph) 

Definition
a curve connects the data points that are plotted 


Term
instantaneous acceleration 

Definition
how fast a velocity is changing at a specific instant 


Term
motion is described with respect to a 

Definition


Term
displacement is distance combined with 

Definition

