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Understanding Distance - Time Graphs Video Lecture | Science Class 7 (Old NCERT)
FAQs on Understanding Distance - Time Graphs Video Lecture - Science Class 7 (Old NCERT)
| 1. What is a distance-time graph? |  |
Ans. A distance-time graph is a visual representation of how the distance traveled by an object changes over time. The horizontal axis represents time, while the vertical axis represents distance. The graph shows the relationship between the two variables, helping us understand the speed and direction of the object.
| 2. How can we interpret a horizontal line on a distance-time graph? | |
Ans. A horizontal line on a distance-time graph indicates that the object is not moving or is at rest. This means that the distance covered by the object remains constant over time. The slope of the line is zero, indicating zero speed.
| 3. What does a positive slope on a distance-time graph indicate? | |
Ans. A positive slope on a distance-time graph indicates that the object is moving in a positive direction. The steeper the slope, the greater the speed of the object. The slope represents the rate at which the distance changes over time.
| 4. How can we determine the speed of an object from a distance-time graph? | |
Ans. To determine the speed of an object from a distance-time graph, we can calculate the slope of the graph. The slope is calculated by dividing the change in distance by the change in time. Speed is equal to the magnitude of the slope.
| 5. What does a curved line on a distance-time graph represent? | |
Ans. A curved line on a distance-time graph indicates that the object is undergoing accelerated motion. The steepness of the curve at any point represents the speed of the object at that particular time. The curvature shows that the speed is changing over time.
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