Vocabulary
Formulas
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Speed/Velocity
Acceleration
100
The distance covered divided by the time interval
What is speed?
100
The formula for rate.
What is quantity divided by time?
100
The speed at any instant of time.
What is instantaneous speed?
100
The difference between speed and velocity.
What is velocity is speed, but with direction added to it.
100
The acceleration of an object in free fall.
What is 9.8 meters per second squared?
200
The time that has passed since the beginning of the time measurement.
What is elapsed time?
200
The formula for speed.
What is distance divided by time?
200
The rate at which velocity is changing.
What is acceleration?
200
If a car has traveled 600 miles in 10 hours, this is its average speed.
What is 60 mph?
200
If a car starts at 0 mph and accelerates to 20 mph in 5 seconds, this is its acceleration.
What is 4 mph per second?
300
Speed together with the direction of motion.
What is velocity?
300
The formula for acceleration.
What is the change in velocity divided by time?
300
A change in quantity divided by the time it takes for the change to occur.
What is rate?
300
If a car travels at 75 mph for 2 hours, it has traveled this far.
What is 150 miles?
300
If a car starts at 0 mph and accelerates at 5 mph per second for 8 seconds, this is its new speed.
What is 40 mph?
400
The total distance covered divided by the time interval.
What is average speed?
400
The formula for distance in free fall.
What is one half times gravity times time squared.
400
Motion under the influence of the gravitational force only.
What is free fall?
400
The instantaneous speed of an object that has been in free fall for 3 seconds.
What is 30 meters/second?
400
If a car starts at 50 mph and decelerates to 30 mph in 5 seconds, this is its acceleration.
What is -4 mph per second.
500
Regarded in relation to something or somebody else.
What is relative?
500
The formula for instantaneous speed in free fall.
What is 10 (or 9.8) times time.
500
Acceleration that happens when an object is slowing down.
What is deceleration?
500
If you have traveled 500 miles at 75 miles per hour, you have been traveling for this long (without stops).
What is 6.67 hours?
500
If a car starts at 75 mph and decelerates to 0 mph in 10 seconds, this is its acceleration.
What is -7.5 mph per second?
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