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प्रश्न
Clarify the difference.
Distance and displacement
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उत्तर
| Distance | Displacement |
| It is defined as the length of the actual path travelled by an object in motion. | It is defined as the shortest distance between the starting and finishing points. |
| It is a scalar quantity. | It is a vector quantity. |
| The values of distance are always positive. | The values of displacement can be positive, negative or zero. |
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संबंधित प्रश्न
Is displacement a scalar quantity ?
If on a round trip you travel 6 km and then arrive back home :
What is your final displacement ?
A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards East.
What is the total distance travelled ?
In which of the following cases of motion, the distance moved and the magnitude of displacement are equal?
If the displacement of an object is proportional to the square of time, then the object is moving with :
Differentiate between distance and displacement.
Figure (a) shows the velocity-time graph for the motion of a body. Use it to find the displacement of the body at t = 1 s, 2 s, 3 s and 4 s, then draw on Figure (b), the displacement-time graph for it.
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| (a) | (b) |
When brakes are applied to a bus, retardation produced is 25 cm s-2 and the bus takes 20 s to stop. Calculate -
- The initial velocity of the bus
- The distance travelled by bus during this time.
A bird sitting on a wire, flies, circles around and comes back to its perch. Explain the total distance it traversed during its flight and its eventual displacement.
A racehorse runs straight towards the north and covers 540 m in one minute. Calculate
- displacement of the horse,
- its velocity in (a) ms−1 (b) kmh−1.
How can you find the following?
Velocity from a displacement – time graph.
How can you find the following?
Displacement from velocity – time graph.
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
`(3/4)` th of a revolution
Ashok starts from his house and travels 3 km to reach his school. On finding the school gates closed, he returns to his house. What is?
The distance traveled by Ashok.
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.
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 |
Which vehicle is moving with a constant acceleration?
State whether true or false. If false, correct the statement.
Distance covered by a particle never becomes zero but displacement becomes zero.
Distance travelled by a body in a given time ______.
Give some examples for vector quantity.
A quantity that has both magnitude and direction is ______.
