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Questions and Answers
What is the definition of acceleration?
What is the definition of acceleration?
- When an object moves at a changing speed.
- When the speed stays the same.
- The speed of an object in a certain direction.
- The change in final velocity divided by the time for change to take place. (correct)
What is velocity?
What is velocity?
Speed of an object in a certain direction.
Constant speed means the speed changes over time.
Constant speed means the speed changes over time.
False (B)
What is variable speed?
What is variable speed?
Average speed is the total distance covered divided by a given ______.
Average speed is the total distance covered divided by a given ______.
Instantaneous speed is when the speed of an object stays the same.
Instantaneous speed is when the speed of an object stays the same.
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Study Notes
Types of Speed
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Acceleration:
- Defined as the change in velocity over change in time.
- Occurs during speeding up, slowing down, or changing direction.
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Velocity:
- Represents the speed of an object in a specific direction.
- Essential in understanding motion in a directional context.
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Constant Speed:
- Describes a scenario where the speed does not change over time.
- Indicates uniform motion without acceleration.
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Variable Speed:
- Refers to when an object's speed changes throughout its motion.
- Common in real-life scenarios such as driving through traffic.
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Average Speed:
- Calculated by dividing the total distance traveled by the time taken for that travel.
- Useful for summarizing overall motion over a journey.
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Instantaneous Speed:
- The speed of an object at a specific moment in time.
- Important for understanding speed variations during a motion.
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