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Chapter 9&10 Motion
Question | Answer |
---|---|
speed | The distance an object travels in one unit of time. |
velocity | The speed of an object in a certain direction. |
average speed | A measure of the total distance an object travels in the total amount of time. |
motion | The state in which one object's distance from another is changing. |
acceleration | The rate at which speed changes. It can mean increasing speed,decreasing speed or changing direction. |
constant speed | A state when the speed of an object does not change. |
final velocity | The ending velocity of an object. |
initial velocity | The beginning velocity of an object. |
force | A push or a pull. |
inertia | The tendency of an object to resist change in its motion. |
gravity | The force that pulls objects towards one another. |
reference point | A place or object used for comparison to determine if an object is in motion. |