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Distance and Displacement Video Lecture - Class 9

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FAQs on Distance and Displacement Video Lecture - Class 9

1. What is the difference between distance and displacement?
Ans. Distance is the total length covered by an object in motion, regardless of its direction. Displacement, on the other hand, is the shortest distance between the initial and final positions of an object, taking into account the direction.
2. How can we calculate displacement using distance and direction?
Ans. Displacement can be calculated by considering both the distance and direction of the object's motion. If the object moves in a straight line, displacement is equal to the distance traveled in that line and is given a positive or negative sign based on the direction of motion.
3. Can the distance and displacement be the same for any object in motion?
Ans. Yes, distance and displacement can be the same for an object moving in a straight line without changing its direction. In such cases, the magnitude of displacement will be equal to the total distance covered.
4. What is the significance of distance and displacement in real-life scenarios?
Ans. Distance is useful in determining how much an object has traveled, such as calculating fuel consumption or measuring the length of a race track. Displacement, on the other hand, provides information about the object's change in position, which is important for navigation purposes or determining the net movement of an object.
5. How does distance and displacement differ in the case of circular motion?
Ans. In circular motion, the distance traveled is the total length covered along the circumference of the circle. However, the displacement is zero since the object returns to its initial position after completing one full revolution. Displacement is not concerned with the path taken, only the change in position.
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