Stupendous Speed
Very Cool Velocity
A+ Acceleration
Analyzing Graphs
100
What is the formula for speed?
Speed = Distance / Time
100
What is the formula for velocity?
100
What is the formula for acceleration?
Acceleration = Final Velocity - Initial Velocity / change in time
100
Describe the motion represented by this graph (include direction).
the object is moving with a constant positive velocity
OR
the object is moving forwards with a constant speed
200
How is speed different from velocity?
velocity includes a direction
200
What is the velocity of an object that is moving 6 meters in 2 seconds forwards?
+3 m/s or 3 m/s forwards
200
What are three ways we can tell if something is accelerating?
speeding up, slowing down, and changing direction
200
Describe the motion represented by this graph.
The object is speeding up in the forwards direction
OR
The object is moving forwards with an increasing non-constant velocity.
300
What is the average speed of a cow that walks 6 meters in 90 seconds?
0.067 m/s
300
Distance Traveled = 20 meters, Time in Motion = 4 minutes, Direction = Backwards. What is the velocity of this object?
5 m/min, backwards
-5 m/min (backwards = negative)
300
Final Velocity = 50 m/s, Initial Velocity = 60 m/s, Time to change velocity = 5 seconds. What is the acceleration of this object?
-2 m/s2
300
Describe the motion represented by this graph (include direction).
The object is moving at a constant negative velocity.
or
The object is moving at a constant speed backwards.
400
A porcupine moved toward a pond at a velocity of 5 m/s. How much distance was covered when the porcupine moves for 8 seconds?
40 meters
400
An object travels 25 meters in 2 seconds backwards. What is the object's velocity?
12.5 m/s backwards or -12.5 m/s
400
A person on an electric bike accelerates from rest and reaches a velocity of 10m/s in a total of 5.0 seconds. What is the acceleration?
2 m/s2
400
Describe the motion represented by this graph (be specific).
The object is speeding up (has positive acceleration) forwards
OR
The object is changing its velocity at a constant rate forwards
500
An object travels for 6 seconds with a velocity of -25 m/s. What is the speed of the object?
25 m/s
500
What does a negative velocity mean?
The object is moving backwards (or in a negative direction)
500
What does a horizontal line on a velocity vs time graph indicate?
The object is traveling at a same (constant) velocity
500
Describe the motion represented by this graph.
The object is moving at a constant positive velocity.
OR
The object is moving forwards at a constant speed.
600
What does a position vs time graph with a straight (linear, non-curved) line indicate about a moving object?
The object is moving at a constant velocity.
600
What does a horizontal line on a position vs time graph indicate?
The object is at rest (the object is not moving)
600
How would you describe an object with negative acceleration?
the object is decreasing in velocity over time (slowing down)
600
Which line represents the greatest speed? Explain why using evidence.
A travels the greatest distance in the same amount of time OR speed does not depend on direction, and A has the steepest slope (positive or negative).