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प्रश्न
The following table gives the displacement of a car at different instants of time.
| Time (s) | 0 | 1 | 2 | 3 | 4 |
| Displacement (m) | 0 | 5 | 10 | 15 | 20 |
- Draw the displacement-time sketch and find the average velocity of the car.
- What will be the displacement of the car at (i) 2.5 s and (ii) 4.5 s?
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उत्तर
a.
Displacement-time graph
From the part AB of the graph,
Average velocity = `("Displacement at B - Displacement at A")/"Time taken"`
= `((30 - 20) m)/((6 - 4) s)`
= `(10/2)` m/s
= 5 m/s
(b)
- From the graph, the displacement of car at 2.5 s is 12.5 m.
- From the graph, the displacement of car at 4.5 s is 22.5 m.
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संबंधित प्रश्न
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The table below shows the distance travelled by two vehicles A and B during each second:
| Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Distance travelled by A (m) | 0 | 20 | 80 | 180 | 240 | 300 | 360 | 420 |
| Distance travelled by B (m) | 0 | 10 | 40 | 90 | 160 | 250 | 360 | 490 |
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Exercise Problems.
An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 m and 20 s?
______ is the length of the actual path covered by a body.
Displacement is the ______ distance covered by a body.
