Motion Vocabulary
What is the ratio of the distance an object moves to the amount of time needed to travel the distance?
Speed
Of the following, the one that would be most practical for measuring the length of your finger. kilometers miles centimeters feet
Centimeters.
This is measured by your car's speedometer.
instantaneous speed
Acceleration is described as changes in ________, changes in ___________, or both.
speed and direction
What is the motion of a car if the line on the distance-time graph is horizontal?
Stationary.
What is the speed at which an object is traveling and the direction it is traveling?
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.
6 miles East
What is the speed of a train car if iit traveled 200 meters in 25 seconds?
8 meters per second
What is the acceleration of a bus moving at a constant speed of 50 miles per hour?
Zero
What is the motion of a car if the line on the distance-time graph is a straight line with a positive gradient.
moving at constant speed
The rate at which an object is moving at a given time.
Instantaneous speed.
A system of objects that are not moving with respect to one another are in the same ______
Frame of reference
Who is the faster runner if Bo runs 4 miles in 1 hour, and Mo runs 2 miles in 20 minutes.
Mo
What is the formula for calculating acceleration?
The change in velocity divided by the total time.
What os Motion of a car if the line on a distance-time graph is a straight line with a negative gradient?
moving at constant speed backwards.
What is the direction from the starting point and the length of a straight line from the starting point to the ending point?
Displacement
What is 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?
2 blocks West.
What is A train's average speed if it travels 190 kilometers in 3 hours, and then 120 kilometers in 2 hours?
62 kilometers per hour
What is the acceleration of a car traveling at 10 meters per second that takes 20 seconds to stop.
0.5 meters per second squared backwards.
What is the Motion of a car if the line on a distance-time graph is curving upward.
Speeding up
What is the rate at which velocity changes.
Acceleration
What is 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.
Zero
What is 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.
0.1 kilometers per minute
What is the acceleration of a quantum 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?
50000 kilometers per second squared.
What is the motion of a car if the line on a velocity-time graph is a straight line with a negative gradient?
slowing down.