Units
Acceleration
Positive or Negative?
Velocity-Time Graphs
Problems
100
This is the unit distance is measured in
Meters
100
Acceleration is a change in this over time.
What is velocity
100
Acceleration is this if the object is moving at a constant speed.
What is zero.
100
This is on the x-axis.
What is time
100
This is solved with the equation (final velocity - initial velocity) / Time
What is acceleration
200
This is the unit time is measured in
Seconds
200
These are three ways to accelerate in a car
Gas, brake, and steering wheel
200
Acceleration is _____________ when speeding up in the positive direction.
What is positive
200
This is on the y-axis.
What is velocity
200
A car accelerates from rest to a velocity of 60 m/s in 20 seconds. What is its acceleration.
3 m/s2
300
This is the unit velocity is measured in
m/s
300

Suppose that a car traveling to the right begins to slow down as it approaches a stop sign. The direction of its acceleration is...

to the left

300
Acceleration is _______________ when speeding up in the negative direction.
What is negative
300
This determines acceleration
What is slope
300
An car is traveling at 20 m/s. The driver then sees a cop and slows down to 13 m/s in 2 seconds. What is the acceleration of the car?
-3.5 m/s2
400
This is the unit acceleration is measured in
meters per second squared
400
One or both of these two things needs to change in order for an object to accelerate.
What are speed and direction
400
Acceleration is ____________________ when slowing down in the positive direction
What is negative
400
A positive slope means that acceleration must be _______________.
What is positive
400
If I slowed down at a rate of 2 m/s2 for 4 seconds after traveling a velocity of 18.5 m/s, what is my final velocity?
What is 10.5 m/s
500
Velocity needs to be in these units for calculations involving acceleration.
What is m/s
500
Equation for acceleration
What is final velocity-initial velocity over time or change in velocity over time
500
Acceleration is ___________________ when slowing down in the negative direction.
What is positive.
500
A slope of zero (horizontal line) means that acceleration must be _______________.
What is zero
500
How long does it take for a space shuttle to accelerate from the launch pad to a final velocity of 8046 m/s if it accelerates at a constant rate of 28 m/s2?
287 - 288 seconds
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