Describing Motion
True or False: An object is in motion if its position stays the same relative to another object.
False: Changes
The distance an object moves per unit of time.
Speed
The rate at which velocity changes.
Acceleration
The equation for calculating speed.
Speed= Distance/Time
What does "WiFi" stand for?
Wireless Fidelity
A place or object used for comparison to see if something is moving.
Reference point
Average speed= total distance/total time
True or False: Whenever an object's speed changes, it object accelerates.
True
The SI unit for length.
Meter
In what year did the Berlin Wall fall?
1989
International System of Units
The speed at which an object is moving at a given moment in time.
Instantaneous Speed
This is technically called "negative acceleration."
Deceleration
The unit of measurement that is one hundredth of a meter.
Centimeter
What is the largest island in the world?
Greenland
The abbreviation for the International System of Units.
SI
Speed in a given direction.
Velocity
An object that is moving at a constant speed can still be accelerating if it is ________.
changing direction
The calculation for slope.
Slope= Rise/Run
What is the largest bone in the human body?
Femur
The length of the path between two points.
Distance
The steepness of a line on a graph.
Slope
The formula for acceleration.
Acceleration=Final Speed-Initial Speed/Time
In which TWO ways can you analyze acceleration?
1. Speed vs. Time
2. Distance vs. Time
Before becoming president, Barack Obama served as senator for which state?
Illinois