Motion Vocabulary
The distance an object moves divided by the amount of travel time.
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?
The change in velocity divided by time.
What is acceleration?
Motion of a car if the line on the distance-time graph is horizontal.
What is not moving?
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 east?
Motion of a car if the line on the distance-time graph is a straight line going up.
What is moving at constant speed?
An object that is not moving that is used to compare to an object that is moving.
What is a frame of reference?
The measurement of a straight line and the direction from where an object stopped to where an object started
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 west?
A train's average speed if it travels 120 kilometers in 2 hours.
What is 60 kilometers per hour?
Motion of a car if the line on a distance-time graph is curving upward.
What is speeding up?
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.
What is 0.125 kilometers per minute?
The acceleration of a race car that goes from a pace car speed of 400000 kilometers per second to full speed of 900000 kilometers per second in 10 seconds.
What is 50000 kilometers per second squared?