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प्रश्न
A particle is moving in a circular path of radius r. The displacement after half a circle would be :
पर्याय
0
`pir`
2r
`2pir`
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उत्तर
2r
Displacement is the difference between the final and initial position of a body. It is a vector quantity and is independent of the path taken. So, for the movement of half of a circle, the displacement is 2r, where r is the radius of the circular path.
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संबंधित प्रश्न
The minimum distance between the start and finish points of the motion of an object is called the ______ of the object.
Copy the following table and fill in the blank spaces.
| Quantity | S.I. Unit | Scalar or Vector |
| Displacement | ___________ | ___________ |
An object is thrown vertically upwards. It rises upto a height H and then returns to its initial position. Calculate
The displacement of the object.
A particle is moving in a circular path of radius r. The displacement after half a circle would be
State whether true or false. If false, correct the statement.
Distance covered by a particle never becomes zero but displacement becomes zero.
Assertion: Displacement of a body may be zero when distance travelled by it is not zero.
Reason: The displacement is the shortest distance between initial and final position.
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?
In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
The displacement of a moving object in a given interval of time is zero. Would the distance travelled by the object also be zero? Justify your answer.
Displacement can be zero but distance never.
