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Motion (Ch 7) [Gr7]

Name:________________________
Class: ___________ Date: ________
Across
The ______ is the vertical difference between two points on the line.
To determine the acceleration of an object moving in a straight line, you calculate the _____ in speed per unit of time.
The _____ of an object is the distance the object moves per unit of time.
Scientist define _____ as the rate at which velocity changes.
The prefix ______ means one thousandth.
You can show the motion of an object on a line graph in which you plot distance versus _____.
The SI unit of acceleration is meters per second per ______ or m/s
_______ speed is the speed at which an object is moving at a given instant in time.
The prefix _____ means one thousand.
Speed in a given direction is called ______.
You can calculate the slope of a line by dividing the ______ by the run.
A _______ point is a place or object used for comparison to determine if something is in motion.
Acceleration refers to increasing speed, decreasing speed or _______ direction.
Acceleration = Final Speed minus ______ speed divided by time.
Objects that are ______ relative to Earth, such as a building or a tree make good reference points.
A horizontal line on a distance versus time graph is an area of _____ speed.
Down
The slope of a line on a speed versus time graph is the objects ______.
The slope of a distance - versus - time graph represents _____.
When an object slows down, this is sometimes called _____.
The _____ is the horizontal difference between two points.
There are 1,000 ______ in a meter.
The steepness of a line on a graph is called _____.
To calculate the speed of an object, divide the _____ the object travels by the amount of time it takes.
The _______ in a car gives the car's instantaneous speed.
On a distance versus time graph, the steeper the slope is, the _____ the speed.
To calculate _____ speed, divide the total distance traveled by the total time.
An object is in _______ if its position changes relative to another object.
The prefix ______ means one hundredth.
The SI unit for length is the ______.