Unit 1: Introduction to Motion Flashcards
Motion is defined as a change in….
Position
What is a Frame of Reference?
Frame of Reference refers to something that is NOT moving with respect to an observer that can be used to detect motion.
Define a few examples of Relative directions.
Up, down, in, out, horizontal, vertical, left, right, forward, backward or sideways.
Define the Cardinal Directions.
North, East, South, West
What is a vector?
A vector is a measurement that has both size and direction.
What is a vector represented by a…
Arrow
The length of an arrow (Vector) represents….
Distance
The way an arrow (vector) points represents….
Direction
What is speed?
How fast or slow something goes.
Speed determines how fast something travels in a given amount of…
Time
The SI unit for speed is….
Meters per second (m/s)
What’s the formula for calculating speed?
Distance/Time
What is the Formula for Time?
Distance/Speed
What is the Formula for Distance?
Speed x Time
In a position time graph, the y-axis represents…
Position (Distance)
On a Position Time Graph, what does the X-axis represent?
Time
What is a Velocity?
Measurement of both speed and direction.
When using a vector to represent velocity, the length of the arrow stands for….
Speed
When using a vector to represent velocity, the way an arrow points indicates….
Direction
Objects have the same velocity only if they are moving at the same…?
Speed and Direction
Objects moving at different _______, ________, or ______ have different Velocities. Fill in the blanks. (P.S: The blank orders don’t matter!)
Speeds, Directions and both.
A velocity-time graph shows how Velocity changes over….?
Time
Time is plotted on what axis in a Velocity Time Graph?
X
What axis is Speed or velocity plotted in on a Velocity Time Graph?
Y
What does a straight horizontal line indicate on a Distance Time Graph?
The Object is at rest for a certain period of time.
On a Distance Time Graph, what does a positive slope mean?
Maintaining constant speed OR going away from the starting point.
On a Distance Time Graph, a negative slope means…
Going back to the starting point OR constant speed.
What does a straight horizontal line indicate on a speed/time graph?
Constant Speed
On a Speed/Velocity Time Graph, what does a positive slope mean?
Increasing Speed, Acceleration
On a Speed/Velocity Time Graph, what does a negative slope mean?
decreasing speed, deceleration
On a Speed/Velocity Time Graph, what does a line on the x axis mean?
No movement, stationary
