Motion Vocabulary
The distance an object travels per unit of time; the rate of change of an object's position
What is speed?
Of the following, the one that would be most practical for measuring the length of your finger. kilometers miles centimeters feet
What is centimeters?
This is measured by your car's speedometer.
What is instantaneous speed?
Acceleration is described as changes in ________, changes in ___________, or both.
What are speed and direction?
Motion of a car if the line on the distance-time graph is horizontal.
What is not moving?
The speed at which an object is traveling and the direction it is traveling.
What is velocity?
Nikki's total displacement if he drives 4 miles east from his house to pick up his friend Dave, and then drive 2 more miles east to school.
What is 6 miles?
The speed of a train car if its distance-time graph indicates that it traveled 200 meters in 25 seconds.
What is 8 meters per second?
The acceleration of a bus moving at a constant speed of 50 miles per hour.
What is zero?
The rate at which an object is moving at a given time.
What is instantaneous speed?
A system of objects that are not moving with respect to one another.
What is a frame of reference?
The faster runner if Bo runs 4 miles in 1 hour, and Mo runs 2 miles in 20 minutes.
Who is Mo?
The formula for calculating acceleration.
What is the change in velocity divided by the total time?
The distance and direction of an object's change in position from the starting point.
What is displacement?
Monique's total displacement if she walks 2 blocks east to her friend Carla's house, then 4 blocks west (past her own house) to her friend Kate's house.
What is 2 blocks?
The acceleration of a car traveling at 10 meters per second that takes 20 seconds to stop.
What is 0.5 meters per second squared?
The rate at which velocity changes.
What is acceleration?
Johnny's total displacement if he walks 2 miles to the school, and then takes the short cut back home that is only 1 mile.
What is zero?
A jogger's average speed if she jogs 4 kilometers in 32 minutes, then 2 kilometers in 22 minutes, and finally 1 kilometer in 16 minutes.
What is 0.1 kilometers per minute?
The acceleration of a race car that goes from a pace car speed of 400,000 kilometers per second to full speed of 900,000 kilometers per second in 10 seconds.
What is 50,000 kilometers per second squared?