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Collisions and Impulse
Elastic and Inelastic Dimensions
A+ Acceleration
What formula would this go to?
Questions about Graphs
100
What is the formula for speed?
Speed = Distance / Time
100
What is the formula for velocity?
Velocity = Distance / Time with a direction
100
What is the formula for acceleration?
Acceleration = Final Velocity - Initial Velocity / change in time with a direction
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 km/hr squared, south.. a possible unit for?
Acceleration
200
What goes on the x axis?
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
Final Velocity = 50 m/s south Initial Velocity = 60 m/s south Time to change velocity = 5 seconds What is the acceleration of this object?
-2 m/s squared, south
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

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

Parachutists make use of air resistance. At first, air resistance has little effect. However, air resistance increases as he falls and eventually this force balances his weight. Then the parachutists stop accelerating and falls at a steady rate known as?

terminal velocity

400
How would you describe negative acceleration? You must use the word "velocity".
decrease in velocity over time
400
For what formula would decimeters/hour east be a possible unit?
velocity
400
What does a horizontal line in a velocity graph indicate?
The object is at rest (no movement)
500

The single force that ahs the same effect as two or more forces.

resultant force

500
A pink alien moved south in it's spacecraft 2 km at a rate of 20 m/s. How much time did it take him to do this in seconds?
100s
500
How would you describe the acceleration of this object? - 14 m/s squared, east
negative acceleration, decrease in 14 m/s every second
500

What formula would we use if we wanted to find out how an object's velocity changed within a certain period of time?

Acceleration

500
What does a horizontal line on an speed vs time graph indicate?
The object is traveling at a same (constant) velocity