Podcast
Questions and Answers
Which of the following is true regarding distance?
Which of the following is true regarding distance?
- Distance is the shortest path between an object's start and end points.
- Distance is a vector quantity that considers direction.
- Distance is a scalar quantity representing the total path length covered. (correct)
- Distance can be zero even if an object has moved.
An object travels from point A to point B and then back to point A. What can be concluded about its displacement?
An object travels from point A to point B and then back to point A. What can be concluded about its displacement?
- The displacement is equal to the total distance traveled.
- The displacement is twice the distance between point A and point B.
- The displacement is negative.
- The displacement is zero. (correct)
Speed is calculated by dividing which quantity by time?
Speed is calculated by dividing which quantity by time?
- Displacement
- Velocity
- Acceleration
- Distance (correct)
Velocity is best described as:
Velocity is best described as:
What is the key difference between speed and velocity?
What is the key difference between speed and velocity?
If a car travels 100 meters in 10 seconds, its average speed is:
If a car travels 100 meters in 10 seconds, its average speed is:
For average velocity calculation, which of the following is essential?
For average velocity calculation, which of the following is essential?
Which of the following is a scalar quantity?
Which of the following is a scalar quantity?
If you know the displacement and the time taken for a journey, you can calculate:
If you know the displacement and the time taken for a journey, you can calculate:
Flashcards
Distance
Distance
The total length of ground covered during an object's movement, regardless of starting or ending points.
Displacement
Displacement
The straight-line length between an object's starting and ending points, considering direction.
Scalar Quantity
Scalar Quantity
A quantity that has only magnitude (size) and no direction.
Vector Quantity
Vector Quantity
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Speed
Speed
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Velocity
Velocity
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Average Speed
Average Speed
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Average Velocity
Average Velocity
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Instantaneous Speed
Instantaneous Speed
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Instantaneous Velocity
Instantaneous Velocity
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Study Notes
Distance
- Distance is the total length of ground an object covers.
- It doesn't depend on start or end points, only the travelled space.
- It's a scalar quantity, meaning it's expressed as a magnitude (a number and unit).
- Example: Someone walking a mile to a park and back has a total distance of 2 miles.
Displacement
- Displacement is the length between an object's start and end points, including position change.
- It's a vector quantity, needing both magnitude and direction.
- If the start and end points are the same, the path length is irrelevant to displacement.
- Displacement measures the distance and direction from the starting point.
Speed and Velocity
- Speed and velocity differ based on scalar and vector quantities.
- Speed is a scalar quantity, defined only by magnitude (e.g., 5 m/s).
- Velocity is a vector quantity, requiring both magnitude and direction (e.g., 5 m/s, East).
- Speed is calculated by dividing distance by time.
- Velocity is calculated by dividing displacement by time.
- Average speed and velocity can be found by these calculations.
- Instantaneous speed and velocity are found using calculus or tools like speedometers.
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