Week1
the process of an object changing position from one location to another
motion
the total ground covered by an object during its motion
distance
A position-_____ graph is a line graph that compares the distance an object travels on the vertical axis (y-axis) to the passing of time on the horizontal axis (x-axis).
time
When an object moves in a particular direction, it has _____.
velocity
A car goes from 0 m/s to 20 m/s in 2 seconds, what is its acceleration?
10 m/s/s
the study of motion
mechanics
the shortest length of a path taken by an object from one point to another
displacement
The velocity of an object is change in _____ divided by change in time.
position
the change in velocity divided by the change in time.
acceleration
A biker has a beginning (initial) speed of 3 m/s. After 3 seconds he is now riding at 9 m/s. What is his acceleration?
2 m/s/s
the study of how things move
kinematics
quantities that are described by magnitude alone
scalars
Velocity can be determined by measuring the _____ of each line segment.
slope
The triangles in the acceleration formula are called delta which means ______.
change
Michelle walks 100 m toward the west, then turns and walks back the way she came 20 m. What is her distance traveled?
120 m
the location of an object within a physical frame of reference
position
quantities that are described by both magnitude and direction
vectors
You remember from math that slope equals rise over _____.
run
Vectors are quantities which are described by both _____ and direction.
magnitude
An Olympic runner competing in the 1600 m circles the track exactly 4 times during a race. What is his displacement?
0 m
A set of points a person uses to determine if an object is in motion. We call those points “Reference Points”
frame of reference
things we can measure or things to which we can assign a number and a unit
quantities
The slope on a PT graph has a phrase we repeat over and over for emphasis: SLOPE = _______
VELOCITY
To determine an object’s exact change in velocity, the initial (starting) velocity (vi) is subtracted from the ____ velocity (vf).
final
A shopping cart is pushed 15 meters west across a parking lot in 5 seconds. What is the velocity of the shopping cart?
3 m/s west