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Motion
Speed
14
Science
8th Grade
11/14/2007

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Cards

Term
Speed
Definition

The distance an object travels per unit of time

Term
Formula for Speed
Definition
S= distance divided by time
Term

Distance

Definition

How far an object has traveled or moved from a reference point.

Term

Average Speed

Definition
The total distance traveled divided by the total time of travel
Term

What does a speedometer do?

Definition
It shows how fast a car is going at one point in time or at one instant- instantaneous speed.
Term
If an object is moving with constant speed, the instantaneous speed doesn't change. TRUE or FALSE
Definition
TRUE
Term

Average Speed

Definition
Describes speed of motion when speed is changing.
Term
Average Speed
Definition
average speed= total distance divided by total time
Term
Instantaneous Speed
Definition
Speed at any given point (or instant) in time
Term
Velocity
Definition
Speed of and object plus direction
Term
Motion
Definition

When an object changes its position relative to a reference point.

Term
Distance
Definition
How far an object has moved
Term
SI Unit of Distance
Definition
Meter
Term
Displacement
Definition
The distance and direction an object moves from the starting point.
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