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CH16 - PHYSICS
Question | Answer |
---|---|
When is an object in motion? | An object is in motion if it changes position relative to a reference point. |
How do you know an object’s speed? | If you know the distance an object travels in a certain amount of time, you can calculate the speed of the object. |
How can you graph motion? | You can show the motion of an object on a line graph in which you plot distance versus time. |
What kind of motion does acceleration refer to? | Acceleration refers to increasing speed, decreasing speed, or changing direction. |
How is acceleration calculated? | To determine the acceleration of an object moving in a straight line, you must calculate the change in speed per unit of time. |
What graphs can be used to analyze the motion of an accelerating object? | You can use both a speed-versus-time graph and a distance-versus-time graph to analyze the motion of an accelerating object. |
How do you know an object’s velocity? | When you know both the speed and direction of an object’s motion, you know the velocity of the object. |