Vocabulary
Speed Calculations
Distance-Time Graphs
100
What is the distance traveled in a given amount of time?
Speed
100
What is the formula for average speed?
Average Speed = Total Distance / Total Time
100
What does a horizontal line on a distance-time graph represent?
The object is at rest (stopped, not moving)
200
What is the common starting point used to identify the location of an object?
Reference point
200
Distance = 70 meters
Time = 10 seconds
What is the object's speed?
7 meters per second (7 m/s)
200
What does a sloped/slanted straight line represent on a distance-time graph?
Constant speed
300
What is the speed of an object in a specific direction? (speed and direction)
Velocity
300
The cafeteria is 80 meters from your science class. If you arrive to class 40 seconds after leaving lunch, what is your average speed?
2 meters per second (m/s)
300
What does the steepness (slope) of the line tell you about the object?
The steeper the line (slope), the faster the object is moving.
400
What is displacement?
The distance (difference) between the final position and the starting position of an object. (Different than distance!)
400
It takes you 3 hours to fly from Austin to California, which is 1,410 miles away. What is the average speed of the plane?
470 miles per hour (mi/hr)
400
Which of the following points shows the object is stopped?
B
500
What is the change in speed and/or direction over a time period?
Acceleration
500
It takes 6 hours to drive to Big Bend National Park. The route to get there is 440 miles long. What is my average speed if I drive?
75 miles per hour (mi/hr)
500
What happens to the object's motion at A, B, C, and D?
A: Object is moving away from starting point at a constant speed
B: Object is stopped for 3 seconds
C: Object continues moving away from starting point, going slower than before but still at a constant speed
D: Object turns around and goes back to starting point at a constant speed