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प्रश्न
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
State how is the distance travelled in any part determined from this graph .
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उत्तर
Distance travelled in any part of the graph can be determined by finding the area enclosed by the graph in that part with the time axis.
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संबंधित प्रश्न
Is displacement a scalar quantity ?
Under what conditions can a body travel a certain distance and yet its resultant displacement be zero ?
What is the difference between distance travelled by a body and its displacement ? Explain with the
help of a diagram.
A boy walks from his classroom to the bookshop along a straight corridor towards North. He covers a distance of 20 m in 25 seconds to reach the bookshop. After buying a book, he travels the same distance in the same time to reach back in the classroom. Find (a) average speed, and (b) average velocity, of the boy.
Is displacement a scalar quantity?
Can displacement be zero even if the distance is not zero? Give one example to explain your answer.
What can you say about the nature of motion of a body if its displacement-time graph is A straight line inclined to the time axis with an obtuse angle?
A body is moving in a straight line and its displacement at various instants of time is given in the following table
| Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Displacement (m) | 2 | 6 | 12 | 12 | 12 | 18 | 22 | 24 |
Plot the displacement-time graph and calculate
(i) Total distance travelled in the interval 1 s to 5 s.
(ii) Average velocity in time interval 1 s to 5 s.
A 50 m long train passes over a bridge at a speed of 30 km/h. If it takes 36 seconds to cross the bridge, calculate the length of the bridge.
A quantity that has both magnitude and direction is ______.
