Vocab
Speed
The distance traveled in a period of time.
What unit do you use to measure speed?
The SI unit for speed is meters per second
How can acceleration be represented?
With an arrow
What words do you use to describe direction?
positive, negative
How do you describe position in two dimensions?
You need two reference points
Reference Point
An object used to describe a location
If i am going 50 mph for and hour what kind of speed is that?
Constant speed
What are speed-time graphs used for?
to measure speed and time
if i'm in the ocean at 100m from shore and a wave comes by and pushes me to 50m form shore what is the displacement
50m
What is the unit of speed used with acceleration?
meters per second per second / meters per second2
The difference between the initial and final position of an object
What is the formula to find average speed?
Average speed = total distance / total time
if you go at a constant speed what would it look like on a graph?
a horizontal line
0
When you are driving around a curve which way does the acceleration go towards?
The inside of the curve
Velocity
The speed and direction of a moving object
What are distance-time graphs used for?
To measure distance and time
What is the formula for acceleration?
Acceleration = final speed - initial speed / total time
What is position?
An objects distance and direction from a reference point
Whats the difference between speed and velocity?
Velocity depend on both speed and direction
Acceleration
The measure of change in velocity over a period of time
How can velocity be represented?
With an arrow
what does it mean when the graph is curved upwards?
as the distance increases the rate of increase decreases over time
What is the difference between distance and displacement?
distance is the total amount traveled and displacement is the distance you are from the starting point.
V=191km/4h 15m
41.52km/h