Advertisements
Advertisements
प्रश्न
A body is moving along a circular path of radius r. What will be the distance and displacement of the body when it completes:
Two full revolutions
Advertisements
उत्तर
Distance travelled is two times the perimeter of cirle.
So distance travelled is =4π r.
Displacement =0 as starting and ending point are coinciding.
APPEARS IN
संबंधित प्रश्न
An ant travels a distance of 8 cm from P to Q and then moves a distance of 6 cm at right angles to PQ. Find its resultant displacement.
Can displacement be zero even if the distance is not zero? Give one example to explain your answer.
How is the distance related with time for motion under uniform acceleration such as the motion of a freely falling body?
Figure ahead represents the displacement - time sketch of motion of two cars A and B . Find :
(i) the distance by which the car B was initially ahead of car A.
(ii) the velocities of car A and car B.
(iii) the time in which car A catches car B.
(iv) the distance from start when the car A will catch the car B.
Can distance covered by a body be less than the magnitude of its displacement?
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 uniform velocity?
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?
A body moves is a circle of radius ‘2R’ what is the distance covered and displacement of the body after 2 complete rounds?
Write a note on the following:
knot
The displacement covered by the second hand of radius V in a clock after one revolution is ______.
