Show:
Stupendous Speed
Very Cool Velocity
A+ Acceleration
What formula would this go to?
Questions about Graphs
100
What is the formula for speed?
Speed = Distance / Time
100
What is velocity?
Velocity is speed in a given direction.
100
What is acceleration?
Acceleration is a change in velocity.
100
What formula is m/s an example unit?
speed or average speed
100
What can we find with a distance vs time graph?
speed of an object
200
How is speed different from velocity?
velocity needs a direction
200
What is the velocity of an object that is moving 6 meters in 2 seconds east?
3 m/s east
200
What are three ways we can tell if something is accelerating?
speeding up slowing down changing direction
200
What is m/s squared a possible unit for?
Acceleration
200
What goes on the x axis in a "speed" graph?
time
300
What is the average speed of a cow that walks east 60 meters in 90 seconds? (Remember, the units must be m/s or km/hr)
.7 m/s
300
Distance = 20 meters Time = 4 minutes Direction = south What is the velocity of this object?
5 m/s south
300
How is stopping at a stop sign an example of acceleration?
To stop at a stop sign, you must slow down and come to a stop. Slowing down is a change in velocity, and is therefore an example of acceleration.
300
Which of our formulas must have a direction in order to be complete?
velocity
300
What does a distance vs time graph with a straight (linear) line indicate about a moving object?
It's moving at a constant speed
400
DAILY DOUBLE!!! A porcupine moved toward a pond at a speed of 5 m/s. It took him 8 seconds. What was the distance he traveled?
40 meters
400
An object travels 25 meters in 2 seconds east. What is it's velocity?
12.5 m/s east (must include direction!)
400
How would you describe negative acceleration? You must use the word "velocity".
decrease in velocity over time (slowing down)
400
What two variables must you have in order to calculate speed?
Distance and time
400
What does a horizontal line in a velocity graph indicate?
The object is at rest (no movement)
500
What is the speed of an object moving east for 6 seconds at 105.3 m/s?
105.3 m/s
500
A pink alien moved south in it's spacecraft 2 m at a rate of 20 m/s. How much time did it take him to do this in seconds?
0.1s
500
In the following example, at what point(s) is the walker accelerating? A woman is going for a walk. She leaves her house and works her way to walking at a steady pace. Out of nowhere a dog appears and begins chasing the lady. She quickly turns around and begins running toward her house until she is safely inside.
1. As she leaves her house and increases speed until it becomes constant. 2. Turning around to head back to her house. 3. Speeding up to run away from the dog. 4. Slowing down to enter her house, then eventually stopping once she gets inside.
500
What formula would you use to calculate distance?
D= SxT
500
What does a horizontal line on an speed vs time graph indicate? *hint* you may want to look at your review sheet
The object is traveling at a same (constant) velocity